# Firefox 1. Download the [template file](userChrome.css) 2. Configure the template in `~/.config/clrsync/config.toml`: ```toml [templates.firefox] enabled = true input_path = '~/.config/clrsync/templates/userChrome.css' output_path = '~/.mozilla/firefox//chrome/userChrome.css' reload_cmd = '' ``` 3. Enable `toolkit.legacyUserProfileCustomizations.stylesheets` in `about:config` 4. Restart Firefox to apply the theme