diff --git a/src/Components/CollectionCommentSection.js b/src/Components/CollectionCommentSection.js
index 49f8861e07ab19e2403bad1e0a64fcee929b9f33..edfc7692d39a82a8a5a7e88057fd361a95e6b463 100644
--- a/src/Components/CollectionCommentSection.js
+++ b/src/Components/CollectionCommentSection.js
@@ -116,47 +116,52 @@ export default function CollectionCommentSection(props) {
 		}
 	}
 
-	const NoCommentsMessage = () => {
+	const NoCommentsMessage = (contrast) => {
 		const NoCommentsContainer = styled.div`
 			text-align: center;
 			margin-left: 9vw;
 			margin-right: 9vw;
 		`
 		const BlueTitle = styled.h2`
-			color: #673ab7;
+			color: ${props => props.contrast === "" ? "#673ab7" : "white"};
 		`
 		const Secondary = styled.h3`
 			font-weight: 100;
+			color: ${props => props.contrast === "" ? "black" : "white"};
 		`
 		const ButtonText = styled.span`
 			font-weight: 900;
+			color: ${props => props.contrast === "" ? "white" : "yellow"};
+			text-decoration: ${props => props.contrast === "" ? "none" : "underline"};
 		`
 		const Image = styled.img`
 		`
 		return (
 			<NoCommentsContainer>
 				<Image src={Comentario} style={{ width: "100%", maxWidth: 234 }} />
-				<BlueTitle>Compartilhe sua opinião com a rede!</BlueTitle>
-				<Secondary>Gostou desta coleção? Comente e compartilhe com a rede sua opinião. Interagindo com a rede, você contribui para que mais coleções como esta sejam criadas.</Secondary>
+				<BlueTitle contrast={contrast}>Compartilhe sua opinião com a rede!</BlueTitle>
+				<Secondary contrast={contrast}>Gostou desta coleção? Comente e compartilhe com a rede sua opinião. Interagindo com a rede, você contribui para que mais coleções como esta sejam criadas.</Secondary>
 				<Button
 					variant="contained"
 					color="primary"
+					style={contrast.contrast === "" ? {} : { backgroundColor: "black", border: "1px solid white" }}
 					startIcon={<EditIcon />}
 					onClick={handleScrollToCommentForm}
 				>
-					<ButtonText>Relatar experiência</ButtonText>
+					<ButtonText contrast={contrast}>Relatar experiência</ButtonText>
 				</Button>
 			</NoCommentsContainer>
 		);
 	}
-	const CollectionComments = () => {
+	const CollectionComments = (contrast) => {
 		return (
-			<ComentariosBox>
+			<ComentariosBox contrast={contrast}>
 				<h3>{totalReviews} {totalReviews !== 1 ? 'Relatos' : 'Relato'} sobre o uso do Recurso</h3>
 				{reviews.map(r => {
 					return (
 						<div className="comentario-template" key={r.created_at}>
 							<Comment
+								contrast={contrast}
 								isCollection={false}
 								rerenderCallback={forceUpdate}
 								objectID={props.id}
@@ -205,7 +210,7 @@ export default function CollectionCommentSection(props) {
 	}, [render_state, currPageReviews]);
 
 	return (
-		<CommentAreaContainer container xs={12} direction="row" justify="center" alignItems="center">
+		<CommentAreaContainer contrast={props.contrast} container xs={12} direction="row" justify="center" alignItems="center">
 			<SnackBarComponent
 				snackbarOpen={snackInfo.open}
 				handleClose={handleCloseSnack}
@@ -225,11 +230,11 @@ export default function CollectionCommentSection(props) {
 				openSignUp={handleOpenSignUp}
 			/>
 			<Grid item xs={12} ref={comment_ref}>
-				<CommentAreaCard>
+				<CommentAreaCard contrast={props.contrast}>
 					{
 						props.currentUserId ?
 							<Fragment>
-								<Title>Conte sua experiência com a coleção</Title>
+								<Title contrast={props.contrast}>Conte sua experiência com a coleção</Title>
 								<Grid container style={{ paddingTop: "20px" }} spacing={1}>
 									<Grid item xs={12} sm={2} style={{ paddingLeft: "15px", paddingRight: "15px" }}>
 										<div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center' }}>
@@ -238,6 +243,7 @@ export default function CollectionCommentSection(props) {
 									</Grid>
 									<Grid item xs={12} sm={10}>
 										<CommentForm
+											contrast={props.contrast}
 											colecao
 											recursoId={props.id}
 											handleSnackbar={handlePostSnackbar}
@@ -248,9 +254,9 @@ export default function CollectionCommentSection(props) {
 							</Fragment>
 							:
 							<Grid item xs={12}>
-								<LogInToComment>
+								<LogInToComment contrast={props.contrast}>
 									<span className="span-purple">Você precisa entrar para comentar</span>
-									<Button onClick={() => setSignUpOpen(true)} style={{ textTransform: "uppercase", color: "#666", fontWeight: "700" }}>
+									<Button onClick={() => setSignUpOpen(true)} style={props.contrast === "" ? { textTransform: "uppercase", color: "#666", fontWeight: "700" } : { textTransform: "uppercase", color: "yellow", fontWeight: "700", textDecoration: "underline" }}>
 										<ExitToAppIcon />ENTRAR
                   </Button>
 								</LogInToComment>
@@ -262,7 +268,7 @@ export default function CollectionCommentSection(props) {
 								<CircularProgress className="loading" />
 							</LoadingDiv>
 							:
-							reviews.length ? CollectionComments() : NoCommentsMessage()
+							reviews.length ? CollectionComments(props.contrast) : NoCommentsMessage(props.contrast)
 					}
 				</CommentAreaCard>
 			</Grid>
@@ -300,7 +306,7 @@ const ComentariosBox = styled.div`
         font-family: 'Roboto Light','Roboto Regular',Roboto;
         font-weight: 300;
         font-style: normal;
-        color:#666;
+				color: ${props => props.contrast === "" ? "#666" : "white"};
         font-size: 1.857em;
         margin: 15px 2%;
         text-align : flex-start;
@@ -355,7 +361,7 @@ const LogInToComment = styled.div`
         font-size : 24px;
         font-weight : 700;
         padding-bottom : 5px;
-        color : #673ab7;
+				color: ${props => props.contrast === "" ? "#673ab7" : "white"};
     }
 
     img {
@@ -366,12 +372,15 @@ const LogInToComment = styled.div`
 
 const CommentAreaContainer = styled(Grid)`
 	padding: 10px;
+	background: ${props => props.contrast === "" ? "#f4f4f4" : "black"};
 `
 const CommentAreaCard = styled(Card)`
 	padding: 45px;
+	background: ${props => props.contrast === "" ? "#f4f4f4" : "black !important"};
+	border: ${props => props.contrast === "" ? "" : "1px solid white!important"};
 `
 const Title = styled.h1`
 	text-align: center;
 	font-weight: 100;
-	color: #666;
+	color: ${props => props.contrast === "" ? "#666" : "white"};
 `
diff --git a/src/Components/Comment.js b/src/Components/Comment.js
index 16bf8d56cf992275e6be37ddf223a36c9b06aa28..c7b10d30918f416f00adee00630eaa0cb2e16bd8 100644
--- a/src/Components/Comment.js
+++ b/src/Components/Comment.js
@@ -16,25 +16,44 @@ GNU Affero General Public License for more details.
 You should have received a copy of the GNU Affero General Public License
 along with Plataforma Integrada MEC.  If not, see <http://www.gnu.org/licenses/>.*/
 
-import React, { useState, useContext } from 'react'
-import { Store } from '../Store.js'
-import styled from 'styled-components'
-import Grid from '@material-ui/core/Grid';
-import { Button } from '@material-ui/core';
-import { Link } from 'react-router-dom'
-import { apiDomain } from '../env';
+import React, { useState, useContext } from "react";
+import { Store } from "../Store.js";
+import styled from "styled-components";
+import Grid from "@material-ui/core/Grid";
+import { Button } from "@material-ui/core";
+import { Link } from "react-router-dom";
+import { apiDomain } from "../env";
 import noAvatar from "../img/default_profile.png";
-import Rating from '@material-ui/lab/Rating';
-import StarBorderIcon from '@material-ui/icons/StarBorder';
-import EditIcon from '@material-ui/icons/Edit';
+import Rating from "@material-ui/lab/Rating";
+import StarBorderIcon from "@material-ui/icons/StarBorder";
+import EditIcon from "@material-ui/icons/Edit";
 import TextField from "@material-ui/core/TextField";
-import Menu from '@material-ui/core/Menu';
-import MenuItem from '@material-ui/core/MenuItem';
-import ModalExcluir from './ModalExcluirComentario.js'
-import { putRequest, deleteRequest } from './HelperFunctions/getAxiosConfig'
+import Menu from "@material-ui/core/Menu";
+import MenuItem from "@material-ui/core/MenuItem";
+import ModalExcluir from "./ModalExcluirComentario.js";
+import { putRequest, deleteRequest } from "./HelperFunctions/getAxiosConfig";
+import { makeStyles } from "@material-ui/styles";
+
+const useStyles = makeStyles((theme) => ({
+  darkTextField: {
+    maxWidth: "100%",
+    fontSize: "15px",
+    fontWeight: "lighter",
+    color: "white",
+    width: "100%",
+  },
+  lightTextField: {
+    maxWidth: "100%",
+    fontSize: "15px",
+    fontWeight: "lighter",
+    color: "black",
+    width: "100%",
+  },
+}));
+
 
 export default function Comment(props) {
-    /*
+  /*
     Required props:
         rerenderCallback = callback function to trigger re-render on parent component
         reviewRatings = required to update comment even though the user cannot update their rating score...
@@ -49,272 +68,392 @@ export default function Comment(props) {
         createdAt
         recurso : boolean; determines whether to display orange or purple font
     */
-    var moment = require('moment')
-
-    const { state } = useContext(Store)
-    const [displayedComment, setDisplayedComment] = useState(props.description)
-    const [editando, setEditando] = useState(false)
-    const [anchorEl, setAnchorEl] = React.useState(null);
-    const handleClick = (event) => {
-        setAnchorEl(event.currentTarget);
-    };
-    const handleClose = () => {
-        setAnchorEl(null);
-    };
-    const [modalOpen, toggleModal] = useState(false)
-
-    const [comment, setComment] = useState({
-        error: false,
-        value: props.description
-    })
-    const handleChange = (e) => {
-        const userInput = e.target.value
-        const flag = (userInput.length === 0 ? true : false);
-        setComment({ ...comment, error: flag, value: userInput })
-    }
-
-    function handleOnSuccessfulComment(data) {
-        setDisplayedComment(comment.value)
-        setEditando(false)
-        props.handlePost()
-    }
-
-    const updateComment = () => {
-        const finalComment = comment
-        let url;
-
-        if (props.isCollection)
-            url = `/collections/${props.objectID}/reviews/${props.reviewID}`
-        else
-            url = `/learning_objects/${props.objectID}/reviews/${props.reviewID}`
-
-        if (!finalComment.error) {
-
-            let payload = {
-                "review": {
-                    "description": finalComment.value,
-                    "review_ratings_attributes": props.reviewRatings
-                }
-            }
-            putRequest(url, payload, handleOnSuccessfulComment, (error) => { console.log(error) })
-
-        }
+  var moment = require("moment");
+  const classes = useStyles();
+  const { state } = useContext(Store);
+  const [displayedComment, setDisplayedComment] = useState(props.description);
+  const [editando, setEditando] = useState(false);
+  const [anchorEl, setAnchorEl] = React.useState(null);
+  const handleClick = (event) => {
+    setAnchorEl(event.currentTarget);
+  };
+  const handleClose = () => {
+    setAnchorEl(null);
+  };
+  const [modalOpen, toggleModal] = useState(false);
+
+  const [comment, setComment] = useState({
+    error: false,
+    value: props.description,
+  });
+  const handleChange = (e) => {
+    const userInput = e.target.value;
+    const flag = userInput.length === 0 ? true : false;
+    setComment({ ...comment, error: flag, value: userInput });
+  };
+
+  function handleOnSuccessfulComment(data) {
+    setDisplayedComment(comment.value);
+    setEditando(false);
+    props.handlePost();
+  }
+
+  const updateComment = () => {
+    const finalComment = comment;
+    let url;
+
+    if (props.isCollection)
+      url = `/collections/${props.objectID}/reviews/${props.reviewID}`;
+    else url = `/learning_objects/${props.objectID}/reviews/${props.reviewID}`;
+
+    if (!finalComment.error) {
+      let payload = {
+        review: {
+          description: finalComment.value,
+          review_ratings_attributes: props.reviewRatings,
+        },
+      };
+      putRequest(url, payload, handleOnSuccessfulComment, (error) => {
+        console.log(error);
+      });
     }
-
-    function handleSuccessDeleteComment(data) {
-        props.rerenderCallback()
-        props.handleSnackbar(3)
-    }
-
-    const deleteComment = () => {
-        let url;
-
-        if (props.isCollection)
-            url = `/collections/${props.objectID}/reviews/${props.reviewID}`
-        else
-            url = `/learning_objects/${props.objectID}/reviews/${props.reviewID}`
-
-        deleteRequest(url, handleSuccessDeleteComment, (error) => { console.log(error) })
-
-        toggleModal(false)
-
-    }
-    if (props.authorID)
-        return (
-            <React.Fragment>
-                <ModalExcluir
-                    open={modalOpen} handleClose={() => { toggleModal(false) }}
-                    handleConfirm={deleteComment}
+  };
+
+  function handleSuccessDeleteComment(data) {
+    props.rerenderCallback();
+    props.handleSnackbar(3);
+  }
+
+  const deleteComment = () => {
+    let url;
+
+    if (props.isCollection)
+      url = `/collections/${props.objectID}/reviews/${props.reviewID}`;
+    else url = `/learning_objects/${props.objectID}/reviews/${props.reviewID}`;
+
+    deleteRequest(url, handleSuccessDeleteComment, (error) => {
+      console.log(error);
+    });
+
+    toggleModal(false);
+  };
+  if (props.authorID)
+    return (
+      <React.Fragment>
+        <ModalExcluir
+          open={modalOpen}
+          handleClose={() => {
+            toggleModal(false);
+          }}
+          handleConfirm={deleteComment}
+        />
+        <Grid container style={{ paddingLeft: "20px" }}>
+          <Grid item xs={1}>
+            {props.authorID && (
+              <AvatarDiv>
+                <Link to={"/usuario-publico/" + props.authorID}>
+                  <img
+                    src={
+                      props.authorAvatar
+                        ? apiDomain + props.authorAvatar
+                        : noAvatar
+                    }
+                    alt="author avatar"
+                  />
+                </Link>
+              </AvatarDiv>
+            )}
+          </Grid>
+
+          <Grid item xs={10}>
+            <Comentario contrast={state.contrast}>
+              <div className="star-rating-container">
+                <Rating
+                  name="read-only"
+                  value={props.rating}
+                  readOnly
+                  size="small"
+                  style={
+                    state.contrast === ""
+                      ? { color: "#666" }
+                      : { color: "yellow" }
+                  }
+                  emptyIcon={
+                    <StarBorderIcon
+                      fontSize="inherit"
+                      style={
+                        state.contrast === ""
+                          ? { color: "#a5a5a5" }
+                          : { color: "yellow" }
+                      }
+                    />
+                  }
                 />
-                <Grid container style={{ paddingLeft: "20px" }}>
-
-                    <Grid item xs={1}>
-                        {
-                            props.authorID &&
-                            <AvatarDiv>
-                                <Link to={'/usuario-publico/' + props.authorID}>
-                                    <img src={props.authorAvatar ? apiDomain + props.authorAvatar : noAvatar} alt="author avatar" />
-                                </Link>
-                            </AvatarDiv>
+              </div>
+
+              {props.name && <strong>{props.name}</strong>}
+
+              <div>
+                {editando ? (
+                  <React.Fragment>
+                    <div style={{ marginTop: "5%", padding: "2px" }}>
+                      <StyledTextField
+                        contrast={props.contrast}
+                        colecao={!props.recurso}
+                        id="input-comentario"
+                        label={"Editar Comentário"}
+                        margin="normal"
+                        value={comment.value}
+                        InputProps={
+                          props.contrast === ""
+                            ? { className: classes.lightTextField }
+                            : { className: classes.darkTextField }
                         }
-                    </Grid>
-
-                    <Grid item xs={10}>
-                        <Comentario contrast={state.contrast}>
-                            <div className="star-rating-container">
-                                <Rating
-                                    name="read-only"
-                                    value={props.rating}
-                                    readOnly
-                                    size="small"
-                                    style={state.contrast === "" ? { color: "#666" } : { color: "yellow" }}
-                                    emptyIcon={<StarBorderIcon fontSize="inherit" style={state.contrast === "" ? { color: "#a5a5a5" } : { color: "yellow" }} />}
-                                />
-                            </div>
-
-                            {
-                                props.name &&
-                                <strong>{props.name}</strong>
+                        variant="outlined"
+                        multiline={true}
+                        rows="5"
+                        onChange={(e) => {
+                          handleChange(e);
+                        }}
+                        style={{ width: "100%" }}
+                      />
+                    </div>
+                    <div style={{ float: "right" }}>
+                      <StyledButton
+                        contrast={state.contrast}
+                        style={
+                          state.contrast === ""
+                            ? props.recurso
+                              ? { backgroundColor: "#ff7f00" }
+                              : { backgroundColor: "#673ab7" }
+                            : {
+                              backgroundColor: "black",
+                              border: "1px solid white",
+                              textDecoration: "underline",
                             }
-
-                            <div>
-                                {
-                                    editando ?
-                                        (
-                                            <React.Fragment>
-                                                <div style={{ marginTop: "5%", padding: "2px" }}>
-                                                    <StyledTextField
-                                                        colecao={!props.recurso}
-                                                        id="input-comentario"
-                                                        label={"Editar Comentário"}
-                                                        margin="normal"
-                                                        value={comment.value}
-                                                        multiline={true}
-                                                        rows="5"
-                                                        onChange={(e) => { handleChange(e) }}
-                                                        style={{ width: "100%" }}
-                                                    />
-                                                </div>
-                                                <div style={{ float: "right" }}>
-                                                    <StyledButton
-                                                        style={props.recurso ? { backgroundColor: "#ff7f00" } : { backgroundColor: "#673ab7" }}
-                                                        onClick={() => { setEditando(false) }}
-                                                    >
-                                                        Fechar
-                                    </StyledButton>
-                                                    <StyledButton
-                                                        style={props.recurso ? { backgroundColor: "#ff7f00" } : { backgroundColor: "#673ab7" }}
-                                                        onClick={() => updateComment()}
-                                                    >
-                                                        Salvar
-                                    </StyledButton>
-                                                </div>
-                                            </React.Fragment>
-                                        )
-                                        :
-                                        (
-                                            <React.Fragment>
-                                                <p>
-                                                    {
-                                                        props.authorID &&
-                                                        <Link
-                                                            to={'/usuario-publico/' + props.authorID}
-                                                            style={{
-                                                                fontWeight: "bolder",
-                                                                color: state.contrast === "" ? props.recurso ? "#ff7f00" : "#673ab7" : "white"
-                                                            }}
-                                                        >
-                                                            {props.authorName}
-                                                        </Link>
-                                                    }
-                                        : {displayedComment}
-                                                </p>
-                                                <span className="date">
-                                                    {moment(props.createdAt).format("DD/MM/YYYY")}
-                                                </span>
-                                            </React.Fragment>
-                                        )
-                                }
-                            </div>
-
-                        </Comentario>
-                    </Grid>
-
-                    {
-                        props.authorID === state.currentUser.id &&
-                        <Grid item xs={1}>
-                            <StyledDiv>
-                                <Button onClick={handleClick}><EditIcon /></Button>
-                                <Menu
-                                    id="simple-menu"
-                                    anchorEl={anchorEl}
-                                    keepMounted
-                                    open={Boolean(anchorEl)}
-                                    onClose={handleClose}
-                                >
-                                    <MenuItem onClick={() => { setEditando(true); handleClose() }}>Editar</MenuItem>
-                                    <MenuItem onClick={() => { toggleModal(true); handleClose() }}>Excluir</MenuItem>
-                                </Menu>
-                            </StyledDiv>
-                        </Grid>
+                        }
+                        onClick={() => {
+                          setEditando(false);
+                        }}
+                      >
+                        Fechar
+                      </StyledButton>
+                      <StyledButton
+                        contrast={state.contrast}
+                        style={
+                          state.contrast === ""
+                            ? props.recurso
+                              ? { backgroundColor: "#ff7f00" }
+                              : { backgroundColor: "#673ab7" }
+                            : {
+                              backgroundColor: "black",
+                              border: "1px solid white",
+                              textDecoration: "underline",
+                            }
+                        }
+                        onClick={() => updateComment()}
+                      >
+                        Salvar
+                      </StyledButton>
+                    </div>
+                  </React.Fragment>
+                ) : (
+                    <React.Fragment>
+                      <p>
+                        {props.authorID && (
+                          <Link
+                            to={"/usuario-publico/" + props.authorID}
+                            style={{
+                              fontWeight: "bolder",
+                              color:
+                                state.contrast === ""
+                                  ? props.recurso
+                                    ? "#ff7f00"
+                                    : "#673ab7"
+                                  : "white",
+                            }}
+                          >
+                            {props.authorName}
+                          </Link>
+                        )}
+                      : {displayedComment}
+                      </p>
+                      <span className="date">
+                        {moment(props.createdAt).format("DD/MM/YYYY")}
+                      </span>
+                    </React.Fragment>
+                  )}
+              </div>
+            </Comentario>
+          </Grid>
+
+          {props.authorID === state.currentUser.id && (
+            <Grid item xs={1}>
+              <StyledDiv>
+                <Button onClick={handleClick}>
+                  <EditIcon
+                    style={state.contrast === "" ? {} : { color: "white" }}
+                  />
+                </Button>
+                <Menu
+                  id="simple-menu"
+                  anchorEl={anchorEl}
+                  keepMounted
+                  open={Boolean(anchorEl)}
+                  onClose={handleClose}
+                >
+                  <MenuItem
+                    style={
+                      state.contrast === ""
+                        ? {}
+                        : {
+                          backgroundColor: "black",
+                          color: "yellow",
+                          textDecoration: "underline",
+                        }
                     }
-                </Grid>
-            </React.Fragment>
-        )
-    else
-        return (
-            <Grid container style={{ paddingLeft: "20px" }} justify='center' alignItems='center '>
-
-                <Grid item xs={1}>
-                    {
-                        <AvatarDiv>
-                            <img src={noAvatar} alt="author avatar" />
-                        </AvatarDiv>
+                    onClick={() => {
+                      setEditando(true);
+                      handleClose();
+                    }}
+                  >
+                    Editar
+                  </MenuItem>
+                  <MenuItem
+                    style={
+                      state.contrast === ""
+                        ? {}
+                        : {
+                          backgroundColor: "black",
+                          color: "yellow",
+                          textDecoration: "underline",
+                        }
                     }
-                </Grid>
-
-                <Grid item xs={10}>
-                    <Comentario contrast={state.contrast}>
-                        <p>
-                            O usuário que fez esse comentário deletou a conta.
-                        </p>
-                    </Comentario>
-                </Grid>
+                    onClick={() => {
+                      toggleModal(true);
+                      handleClose();
+                    }}
+                  >
+                    Excluir
+                  </MenuItem>
+                </Menu>
+              </StyledDiv>
             </Grid>
-        )
+          )}
+        </Grid>
+      </React.Fragment>
+    );
+  else
+    return (
+      <Grid
+        container
+        style={{ paddingLeft: "20px" }}
+        justify="center"
+        alignItems="center "
+      >
+        <Grid item xs={1}>
+          {
+            <AvatarDiv>
+              <img src={noAvatar} alt="author avatar" />
+            </AvatarDiv>
+          }
+        </Grid>
+
+        <Grid item xs={10}>
+          <Comentario contrast={state.contrast}>
+            <p>O usuário que fez esse comentário deletou a conta.</p>
+          </Comentario>
+        </Grid>
+      </Grid>
+    );
 }
 
 const StyledTextField = styled(TextField)`
-    label.Mui-focused {
-        color : ${props => props.colecao ? "rgb(103,58,183)" : "rgb(255,127,0)"};
+  .MuiInputBase-root {
+    margin-bottom: 5px;
+  }
+
+  .MuiOutlinedInput-root {
+    &.Mui-focused fieldset {
+      border-color: ${(props) =>
+    props.contrast === ""
+      ? props.colecao
+        ? "#673ab7"
+        : "rgb(255,127,0)"
+      : "yellow"};
     }
-
-    .MuiInput-underline::after {
-        border-bottom: ${props => props.colecao ? "2px solid rgb(103,58,183)" : "2px solid rgb(255,127,0)"};
+    fieldset {
+      border-color: ${(props) => (props.contrast === "" ? "#666" : "white")};
     }
+  }
 
-`
-
-const StyledDiv = styled.div`
-     text-align : center;
-     .MuiButton-root {
-         @media screen and (max-width: 990px) {
-             padding-right : 35px !important;
-         }
-     }
-`
-const StyledButton = styled(Button)`
-    color : rgba(255,255,255,0.87) !important;
-    box-shadow : 0 2px 5px 0 rgba(0,0,0,.26) !important;
-    margin : 6px 8px !important;
-    font-weight : 600 !important;
-`
+  label {
+    color: ${(props) => (props.contrast === "" ? "#666" : "white")};
+  }
 
-const Comentario = styled.div`
-    padding-left : 55px !important;
-    font-size : 14px;
-    color: ${props => props.contrast === "" ? "#ababab" : "white"};
+  label.Mui-focused {
+    color: ${(props) =>
+    props.contrast === ""
+      ? props.colecao
+        ? "#673ab7"
+        : "rgb(255,127,0)"
+      : "yellow"};
+  }
 
-    .star-rating-container {
-        width : 100px;
-    }
+  label.Mui-focused.Mui-error {
+    color: red;
+  }
 
-    p {
-        margin : 0 0 10px;
-        padding-left : 2px
-    }
+  width: 95%;
+`;
 
-    a {
-        text-decoration : none !important;
+const StyledDiv = styled.div`
+  text-align: center;
+  .MuiButton-root {
+    @media screen and (max-width: 990px) {
+      padding-right: 35px !important;
     }
+  }
+`;
+const StyledButton = styled(Button)`
+  color: ${(props) =>
+    props.contrast === ""
+      ? "rgba(255,255,255,0.87) !important"
+      : "yellow !important"};
+  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26) !important;
+  margin: 6px 8px !important;
+  font-weight: 600 !important;
+  :hover {
+    background-color: ${(props) =>
+    props.contrast === "" ? "" : "rgba(255,255,0,0.24) !important"};
+  }
+`;
 
-    .date {
-        color: ${props => props.contrast === "" ? "#ababab" : "white"};
-        font-size : 12px;
-        font-weight : lighter;
-        padding-left : 3px;
-    }
-`
+const Comentario = styled.div`
+  padding-left: 55px !important;
+  font-size: 14px;
+  color: ${(props) => (props.contrast === "" ? "#ababab" : "white")};
+
+  .star-rating-container {
+    width: 100px;
+  }
+
+  p {
+    margin: 0 0 10px;
+    padding-left: 2px;
+  }
+
+  a {
+    text-decoration: none !important;
+  }
+
+  .date {
+    color: ${(props) => (props.contrast === "" ? "#ababab" : "white")};
+    font-size: 12px;
+    font-weight: lighter;
+    padding-left: 3px;
+  }
+`;
 
 const AvatarDiv = styled.div`
     text-align : center;
@@ -332,4 +471,4 @@ const AvatarDiv = styled.div`
         border-radius : 100%
         vertical-align : middle;
     }
-`
+`;
diff --git a/src/Components/FormationMaterialHeader.js b/src/Components/FormationMaterialHeader.js
index e5c7185342f9268bcb0ebf3cb102ae78cf8acb2a..af2417ff6835208ee354dc70f514e34c51205d3b 100644
--- a/src/Components/FormationMaterialHeader.js
+++ b/src/Components/FormationMaterialHeader.js
@@ -78,17 +78,21 @@ export default function FormationMaterialHeader(props) {
 					</Grid>
 					<Grid item>
 						{colecao ?
-							<Button
-								variant="contained"
-								color="secondary"
-								style={{ marginLeft: '15px' }}
-								onClick={props.handleClick}
-							>
-								{props.colecao ? "Ver todos os módulos" : "Iniciar leitura"}
-							</Button>
+							<StyledLink contrast={props.contrast}>
+								<Button
+									className="button"
+									variant="contained"
+									color="secondary"
+									style={{ marginLeft: '15px' }}
+									onClick={props.handleClick}
+								>
+									{props.colecao ? "Ver todos os módulos" : "Iniciar leitura"}
+								</Button>
+							</StyledLink>
 							:
 							<StyledLink contrast={props.contrast} to={'/iframe-colecao?colecao=' + colecao_obj.id + '&topico=' + topico_obj.id}>
 								<Button
+									className="button"
 									variant="contained"
 									color="secondary"
 									style={{ marginLeft: '15px', marginTop: '10px' }}
@@ -149,6 +153,15 @@ export const WrappingCard = styled(Card)`
 `
 
 const StyledLink = styled(Link)`
-	text-decoration: ${props => props.contrast === "" ? "none !important" : "underline !important"};
 	color: ${props => props.contrast === "" ? "#e81f4f !important" : "yellow !important"};
+	text-decoration: ${props => props.contrast === "" ? "none !important" : "underline !important"};
+
+	.button{
+		background-color: ${props => props.contrast === "" ? "" : "black "}; 
+		color: ${props => props.contrast === "" ? "white" : "yellow"};
+		border:  ${props => props.contrast === "" ? "0" : "1px solid white"}; 
+		:hover{
+			background-color: ${props => props.contrast === "" ? "" : "rgba(255,255,0,0.24)"};
+		}
+	}
 `
diff --git a/src/Components/ResourcePageComponents/CommentForm.js b/src/Components/ResourcePageComponents/CommentForm.js
index 69b2ad436b0c29635ba8ebce6d7a1a81867572db..d25d8d080113f93b188b9a63f24090aa9d0eb44d 100644
--- a/src/Components/ResourcePageComponents/CommentForm.js
+++ b/src/Components/ResourcePageComponents/CommentForm.js
@@ -165,8 +165,8 @@ export default function CommentForm(props) {
                             </OrangeButton>
                         ) : (
                                 <PurpleButton contrast={props.contrast} type="submit">
-                                    <EditIcon />
-                Enviar
+                                    <EditIcon style={props.contrast === "" ? { marginRight: "0.3em" } : { color: "white", marginRight: "0.3em" }} />
+                                    Enviar
                                 </PurpleButton>
                             )}
                     </div>
diff --git a/src/Components/ResourcePageComponents/CommentsArea.js b/src/Components/ResourcePageComponents/CommentsArea.js
index c28718c8f21249399a144f289866909a0132714b..4b22d249ff9071fc0d535c7e081de589dd1a9ed0 100644
--- a/src/Components/ResourcePageComponents/CommentsArea.js
+++ b/src/Components/ResourcePageComponents/CommentsArea.js
@@ -193,6 +193,7 @@ export default function CommentsArea(props) {
                                         comentarios.map(comentario =>
                                             <div className="comentario-template" key={comentario.id}>
                                                 <Comment
+                                                    contrast={state.contrast}
                                                     isCollection={false}
                                                     authorID={comentario.user ? comentario.user.id : null}
                                                     authorAvatar={comentario.user ? comentario.user.avatar : null}
diff --git a/src/Components/TopicFooter.js b/src/Components/TopicFooter.js
index c6ce8ea42ddf97ec278bc6cd63e779b4cd28ec5e..d6e33341361a023add43ada4b4ff4319ba598a63 100644
--- a/src/Components/TopicFooter.js
+++ b/src/Components/TopicFooter.js
@@ -4,7 +4,7 @@ import Grid from '@material-ui/core/Grid';
 
 export default function TopicFooter(props) {
   return (
-		<Container>
+		<Container contrast={props.contrast}>
 			<Wrapper>
 				<Grid
 					container
@@ -30,7 +30,8 @@ export default function TopicFooter(props) {
 
 const Container=styled.div`
 		margin-top: 15px;
-		background-color: #e81f4f;
+		background: ${props => props.contrast === "" ? "#e81f4f" : "black"};
+		border-top: ${props => props.contrast === "" ? "0" : "1px solid white"};
 		height: auto;
 		padding: 0;
 `
diff --git a/src/Pages/CollectionPage.js b/src/Pages/CollectionPage.js
index a894486a65a74b25f6a1560fc89c368f3ef04c83..80ea3277d35b946840264dd7d188300ed585d01d 100644
--- a/src/Pages/CollectionPage.js
+++ b/src/Pages/CollectionPage.js
@@ -66,20 +66,22 @@ export default function CollectionPage(props) {
 
 					<Link className="link" to={`/busca?page=0&results_per_page=12&order=review_average&query=*&search_class=Collection`}>
 						<Button
-						variant='contained'
-						className="back-button"
-					>
-						Voltar para a busca de coleções.
+							variant='contained'
+							className="back-button"
+						>
+							Voltar para a busca de coleções.
 						</Button>
 					</Link>
-			    </Grid>
+				</Grid>
 			</Grid>
 		</CollectionNotFound >
 	if (loading)
-		return <LoadingSpinner text="Carregando coleção..." />
+		return <LoadingDiv contrast={state.contrast}>
+			<LoadingSpinner contrast={state.contrast} text="Carregando coleção..." />
+		</LoadingDiv>
 	else
 		return (
-			<div style={state.contrast === "" ? {backgroundColor: "white"} : {backgroundColor: "black"}}>
+			<div style={state.contrast === "" ? { backgroundColor: "white" } : { backgroundColor: "black" }}>
 				<BreadCrumbsDiv>
 					<StyledBreadCrumbs contrast={state.contrast}>
 						<Link to="/">Página Inicial</Link>
@@ -89,7 +91,7 @@ export default function CollectionPage(props) {
 				<Grid container direction="row" justify="center" alignItems="center">
 					<Grid item md={3}>
 						<CollectionAuthor
-                            contrast={state.contrast}
+							contrast={state.contrast}
 							author_id={collection.owner.id ? collection.owner.id : 0}
 							name={collection.owner.name ? collection.owner.name : ""}
 							imgsrc={collection.owner.avatar ? apiDomain + collection.owner.avatar : noAvatar} />
@@ -98,7 +100,7 @@ export default function CollectionPage(props) {
 
 					<Grid item md={5}>
 						<CollectionDescription
-                            contrast={state.contrast}
+							contrast={state.contrast}
 							stars={collection.review_average}
 							likes={collection.likes_count}
 							liked={collection.liked}
@@ -109,48 +111,49 @@ export default function CollectionPage(props) {
 
 					<Grid item md={3}>
 						<DowloadButton
-                            contrast={state.contrast}
+							contrast={state.contrast}
 							id={collection_id}
 						/>
 						<div style={{ height: 12 }}></div>
 						<FollowCollectionButton
-                            contrast={state.contrast}
+							contrast={state.contrast}
 							followed={collection.followed}
 							user_id={state.currentUser.id}
 							collection_id={collection_id} />
 					</Grid>
 				</Grid>
 
-				<Grid container justify="center" style={state.contrast === "" ? {backgroundColor: "#f4f4f4"} : {backgroundColor: "black"}}>
+				<Grid container justify="center" style={state.contrast === "" ? { backgroundColor: "#f4f4f4" } : { backgroundColor: "black" }}>
 					{/* <Grid item xs={1}/> */}
 					<Grid item xs={10}>
-						<ResourceList 
-                            contrast={state.contrast} 
-                            resources={
-							collection.collection_items ?
-								collection.collection_items.map(i => {
-									return {
-										type: i.collectionable.object_type,
-										author: i.collectionable.author,
-										title: i.collectionable.name,
-										rating: i.collectionable.review_average,
-										likeCount: i.collectionable.likes_count,
-										liked: i.collectionable.liked,
-										avatar: i.collectionable.publisher.avatar,
-										thumbnail: i.collectionable.thumbnail,
-										tags: i.collectionable.tags.map(t => t),
-										id: i.collectionable.id,
-										downloadableLink: i.collectionable.default_attachment_location,
-										publisher: i.collectionable.publisher.name,
-										published: i.collectionable.state
-									}
-								})
-								: []
-						} />
+						<ResourceList
+							contrast={state.contrast}
+							resources={
+								collection.collection_items ?
+									collection.collection_items.map(i => {
+										return {
+											type: i.collectionable.object_type,
+											author: i.collectionable.author,
+											title: i.collectionable.name,
+											rating: i.collectionable.review_average,
+											likeCount: i.collectionable.likes_count,
+											liked: i.collectionable.liked,
+											avatar: i.collectionable.publisher.avatar,
+											thumbnail: i.collectionable.thumbnail,
+											tags: i.collectionable.tags.map(t => t),
+											id: i.collectionable.id,
+											downloadableLink: i.collectionable.default_attachment_location,
+											publisher: i.collectionable.publisher.name,
+											published: i.collectionable.state
+										}
+									})
+									: []
+							} />
 
 					</Grid>
 					<Grid container item xs={12} style={{ marginTop: 40, paddingBottom: 40 }} ref={comment_ref}>
 						<CollectionCommentSection
+							contrast={state.contrast}
 							id={collection_id}
 							currentUserId={state.currentUser.id}
 							avatar={state.currentUser.avatar ? apiDomain + state.currentUser.avatar : noAvatar}
@@ -173,6 +176,11 @@ const StyledBreadCrumbs = styled(Breadcrumbs)`
   }
 `;
 
+const LoadingDiv = styled.div`
+	background-color: ${props => props.contrast === "" ? "" : "black"}; 
+
+`
+
 const CollectionNotFound = styled.div`
   background-color: ${props => props.contrast === "" ? "" : "black !important"};
   color: ${props => props.contrast === "" ? "#666 !important" : "white !important"};
diff --git a/src/Pages/FormationMaterialPage.js b/src/Pages/FormationMaterialPage.js
index 1209461fc96fc2cb398d7ba29f1e79111ff7a865..8b03623f0a3c2852a51e294af03e8bd9a75fdf64 100644
--- a/src/Pages/FormationMaterialPage.js
+++ b/src/Pages/FormationMaterialPage.js
@@ -115,6 +115,7 @@ export default function FormationMaterialPage(props) {
 				<div></div>
 				:
 				<TopicFooter
+					contrast={state.contrast}
 					topic_name={colecao_obj.topic_name}
 					src={colecao_obj.img}
 					colecao_name={colecao_obj.name} />