Stylish - Wikipedia

Nocturnal Firefox Theme (Read Description)

Beginner Guide to User Styles for Firefox

stylish into firefox's sidebar (by danny)

Firefox 17 Aurora Debuts with Stylish New Awesomebar, Tab Animations

css - How to get dark themed addressbar search-results - Stack Overflow

Best Firefox Addons For Better Browsing (2015)

How to modify the New Tab page in Firefox with Stylish? - Super User

Stylish appears to have been removed from the Google Chrome store : r/ firefox

Browser Add-On Stylish for Chrome/Firefox banned – Born's Tech and Windows World

Firefox 89.0 Released with New Elegant UI Design – UbuntuHandbook