My private settings for the firefox theme : https://github.com/cascadefox/cascade
How to use
in firefox navigate to : about:config
enable the following :
toolkit.legacyUserProfileCustomizations.stylesheets = true
navigate to : C:\Users\<yourUserName>\AppData\Roaming\Mozilla\Firefox\Profiles\<yourprofile>
git clone this repository inside this folder
Each branch has a different theme, you can switch branch and restart firefox to check out