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.
A Thunderbird theme version with custom 'Valorant'-red CSS
best for your tool bars
Theme that really follows system colors for Thunderbird 115+.
Extended Version for Ultrawide Monitors
A theme based on the Rose Pine Dawn color scheme (https://rosepinetheme.com/)
Dark Theme CR style Win11 for New Thunderbird 15.
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.
Muted Sage Gruvbox dark theme for Thunderbird.
Forked from calvinchd's gruvbox dark theme.
A faithful port of the original Cobalt2 theme by Wes Bos.
My first Endless Stars Thunderbird Theme with Twinkling Stars. The only thing missing is the falling star animation.