Easily Customize Firefox's Look and Feel with Stylish - Make Tech Easier

Melbourne (Firefox CSS, FF 29 and above) by noha-ra on DeviantArt

Stylish” extension with 2M downloads banned for tracking every site visit : r/firefox

Line - Minimal - Firefox Theme For Stylish by wiiija on DeviantArt

Orta Theme (User Style) For Firefox 4 ~ Web Upd8: Ubuntu / Linux blog

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

15 Firefox Collections To Suit Your Online Browsing Needs - Hongkiat

How to Add a Custom Background to the Firefox New Tab Page

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User Scripts (JS) and User Styles (CSS) - CodeProject

extensions.stylish.editorWindowMode=0 [show editor in a tab (default)] not followed if no userstyles installed, editor opens in separate window instead · Issue #248 · stylish-userstyles/stylish · GitHub