FirefoxCSS Hub

Published theme

Firefox-ONE

Dress Firefox with the Opera One skin

Open original repository
Repository
github.com/Godiesc/firefox-one
Stars
429
Last update
Apr 21, 2026
Submitted as
legacy
Firefox-ONE screenshot

Tags

adaptivefirefoxfirefox-onegodiesconeoperaopera-onetabsthemetree

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.