Clean and Professional

Clean and polished theme for Thunderbird and Firefox.

Verdurous Darker

A dark, forest theme.

Dark Wood Bird

Un thème bois sombre avec logo Thunderbird

ULTRAWIDE ANIMATED MATRIX

Extended Version for Ultrawide Monitors

Owner Gold

This Add-on is a simple theme.
Which is a set header on thunderbird or firfox also.
Header image is based on galaxy image as show on header.

Muted Sage Gruvbox Dark

Muted Sage Gruvbox dark theme for Thunderbird.
Forked from calvinchd's gruvbox dark theme.

Tokyo Night

A nice dark theme for Thunderbird based on Enkia's Tokyo Night theme for VIsual Studio Code.

Valorant Red

A Thunderbird theme version with custom 'Valorant'-red CSS

Liquid Gold WebExtension theme

Liquid Gold Theme for Thunderbird. I made it just for my own use. Hope you like it too..

Windows 10 Style

Dark15_Th

Dark Theme CR style Win11 for New Thunderbird 15.

Solarized light Theme ternoc

Solarized theme created by ternoc, based on Ethan Schoonover palette.

HEKISU1

HEKISU1, BY: HEKISU1, Thamyris, Thamyris71.

Goupilmtos-2024

thèmes Goupilmt OS 2024 for thunderbird.