Recently Updated Extensions
Quite dark theme, based on grey colors with blue and orange elements.
Also check my Add-on homepage for the latest update before it is available here.
A personal mix between dark and light modes.
Theme with the official Friulian Flag.
An abstract Firefox theme of the charactor Carole Pepper of Honkai Impact 3rd. Inspired by the color of the character's default skin, including the character's skin tone and clothing color. The copyright owner of the charactor Carole is Mihoyo.
Just a theme to enjoy in Thunderbird
Un thème bois sombre avec logo Thunderbird
Synthwave Gradient for Thunderbird Email
Dark and violet theme for Thunderbird by Stonymontana
Summersmile adds a lively flair to Thunderbird with a sunny yellow background, playful smiley graphics, and a "sunshine and smiles" theme that refreshes your email experience.
Gruvbox dark theme for Thunderbird. Originally written for Firefox. Using https://github.com/morhetz/gruvbox color palette.
Check out this theme for Firefox https://addons.mozilla.org/en-US/firefox/addon/gruvbox-dark-theme/
Theme that really follows system colors for Thunderbird 115+.
best for your tool bars
A Thunderbird theme version with custom 'Valorant'-red CSS
Extended Version for Ultrawide Monitors
Dark Theme CR style Win11 for New Thunderbird 15.
A theme based on the Rose Pine Dawn color scheme (https://rosepinetheme.com/)
Adds theme of Shirasu Azusa from game called Blue Archive.
Anime, Blue Archive, Cute, Dark, Game, Shirasu Azusa
A Thunderbird theme with the new Thunderbird Logo.
A light theme of a gray toned tiger with turquoise eyes.
This is a modified version of the theme "tiger eyes light blue" from AmSumz.
Based on Chromatic Flecks but as a 'light' theme