Nautipolis for Thunderbird: High-quality, solid theme based on icons from art.gnome.org. Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes. Here’s how to enable the Firefox Dark Theme on Mac. Turn on the Dark Theme on Firefox. Open Firefox andthen follow these steps to enable the Dark Theme. 1) Click the Open Menu (three-line icon) button from the top right. 2) Select Customize. 3) At the verybottom, click the Themes button. 4) Select Dark under My Themes. You’ll instantly see the Dark Theme mode with darkbackgrounds.
Firefox userChrome.css Safari style (macOS only) This theme will make Firefox more compliant with macOS. Firefox with macOS theme and NelliTab new tab extension. Firefox 71 or higher for macOS; Known issues. See full list on support.mozilla.org.
Complete themes have been replaced by built-in themes with lighter and darker color schemes.
You can enable one of these built-in themes by following these steps:
Additionally, thousands of lightweight themes are available from addons.mozilla.org. For more information, see Use themes to change the look of Firefox.