userchrome topic
FlyingFox
An opinionated set of configurations for firefox.
PWAsForFirefox
A tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox
Quantum-Nox-Firefox-Dark-Full-Theme
A customizable full dark theme for Firefox. You can also add extra functions using the CSS and JS files here apart from the theme.
FirefoxCSS-Store.github.io
A collection site of Firefox userchrome themes, mostly from FirefoxCSS Reddit community.
simpleMenuWizard
Hide contextmenu items in Firefox Photon
uc.css.js
A dark indigo CSS theme for Firefox and a large collection of privileged scripts to add new buttons, menus, and behaviors and eliminate nuisances. The theme is similar to other userChrome stylesheets,...
elementaryos-firefox-theme
This theme for Firefox supports all the window buttons layouts from Tweaks and it blends into the elementary OS user interface.
MaterialFox
A Material Design-inspired userChrome.css theme for Firefox
CustomCSSforFx
Custom CSS tweaks for Firefox
cascade
A responsive One-Line CSS Theme for Firefox.