**12021.12.01 :: Sideberry is the preferred method, and has been since June. I will not be updating the TST extension moving forward. Sideberry is better in nearly every regard to memory usage, responsiveness, speed, and useability.**
12021.06.14 :: I have added Sideberry support, sideberry is faster, more responsive, and far easier to customize. I may keep going forward with this version.
The default is for light themes, if you have a particular color scheme in mind navigate to Sideberry Settings > Style Editor (found at the end of the settings sidebar).
To change the color:
**--tabs-font** :: Changes the default font (uses system font by default) to change the font size.
- I recommend changing it via Sideberry Settings > Appearance > Font Size
If you dislike some of my my other changes to FF (added vivaldi's folder icon, removed the superbox, cleaned up the borders, removed the titlebar) then remove everything below CUSTOM MODIFICATIONS in userChrome.css