Ravelry Accessibility Fix

Color fix for Ravelry Color fix for Ravelry. Please use the "new" theme to allow this extension to properly display the dark theme. If this helps, please feel free to shoot me some beer money @ https://paypal.me/raymwalters Version 0.6 updates: Fixed styling in forum quotes to not have stark backgrounds. Version 0.5 updates: Aligning versioning with Firefox extension - includes some mobile/responsive fixes. Version 0.4 updates: Adds alt-tags to images where missing for screen reader support, using the image name Version 0.3 updates: Removes animations, transforms, and transitions, as well as some "pro" area fixes.