* Fix colors of mastodon-light theme
Fix colors of modals and focused toots in light theme
Fix colors of compose-form items and more
Fix colors of status__content__spoiler-link:hover and $valid-value-color
Change success green color in light theme
* Fix some sass codes
* Add !default for explicit color valiables in default theme
for overwriting colors easier in the other themes
* Add variables for text colors
* Change variables in sass files
* Apply text color variables for recently added colors
* Fix text colors of emoji mart anchors
* Fix text colors of search__input
* Fix text colors of text area of compose-form
* Fix icon colors of privacy dropdown and modal
* Inverted icon colors by classname
* Change variables in boost.scss
* Change action-button-color
* Fix text colors of pre-header
* Refactoring scss
introduce scss variables for the media modal
fix css block structure corresponding to react components
fix flex layouts
remove background image of the loaded image on the media modal
* Fix typo
* Fix font-weight for CJK fonts
* Use `font-weight: 700;` for mobile support
* Fix indentation
* Remove trailing whitespace
* Remove trailing whitespace
