Add-ons
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Dark Shadows XT
Quite dark theme, based on shades of grey colors, with blue and green accents.
Modern Theme
Seemless experience for Firefox & Thunderbird!
The Modern Theme aims for a lightweighted and eye-friendly design. Based on Dark Mode, it uses a contrasty combination of a unique blue-green-turquoise blend combined with sunset orange.
Modern Theme Green
Modern Theme Green thats easy for the eyes and ported from Firefox for a seemless web experience.
New Year's Eve Theme
Celebrate New Year's Eve with this festive Thunderbird theme featuring fireworks and sparkling visuals.
Classic BB Colors
Calm and simple, bright theme in classic blue and beige colors.
MintGreen Dark Soft
This theme matches well with LinuxMint and Cinnamon Theme.
Use an add-on like Darko to darken the message body.
Originally written for Firefox.
Thanks to calvinchd at calch.themes.thunderbird.net for original Gruvbox Dark.
Tested up to v128.
To create your own collections, you must have a Mozilla Add-ons account.
