Fixed text field error color and helper text color

src/App.js

src/Components/FormInput.js

src/Components/PageProfessorComponents/PartOne.js

src/Components/ReportUserForm.js

src/Components/ResourcePageComponents/CommentForm.js

src/Components/Stepper.js

src/Components/UploadPageComponents/Forms/Keywords.js

src/Components/UploadPageComponents/Stepper.js

src/Components/UploadPageComponents/StyledComponents.js