FirefoxCSS-Store

Published theme

Firefox-ONE

Dress Firefox with the Opera One skin

Open original repository
Repository
github.com/Godiesc/firefox-one
Stars
430
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-Store indexes this submission for discovery. The code, license, support, and installation details belong to the original repository.