FirefoxCSS Hub

Published theme

Firefox UWP Style

A theme that follows UWP styling. Featuring the original MDL2 design and Sun Valley refresh

Open original repository
Repository
github.com/Guerra24/Firefox-UWP-Style
Stars
453
Last update
Apr 13, 2026
Submitted as
legacy
Firefox UWP Style screenshot

Tags

colorschemedarkguerra24

Install overview

  1. Open the original repository and read the maintainer's installation notes.
  2. Enable toolkit.legacyUserProfileCustomizations.stylesheets in about:config.
  3. Create or open the chrome folder in your Firefox profile.
  4. Copy the theme files requested by the original repository and restart Firefox.

Ownership note

FirefoxCSS Hub indexes this submission for discovery. The code, license, support, and installation details belong to the original repository.