Endeavour_Purple

My Theme

Nord Hardt

An arctic, north-bluish dark, clean and elegant color scheme for Thunderbird 128+.

Muted Sage Gruvbox Dark

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

Dark electric violet

Dark and violet theme for Thunderbird by Stonymontana

Brightbird Theme

Brightbird Theme for Brightbird Users.

Black Abstract Fox

Solarized light Theme ternoc

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

abstract nine

3DTriangles

A Mozilla Thunderbird theme with 3D Objets and transparent design

Abstract Space Blue

Space
Espaço Sideral
Galaxy
Galaxia

Sparkle Stuff by MaDonna

Theme Designed by MaD♥nna

Liquid Gold WebExtension theme

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

Valorant Red

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

Splat Theme

Purple Pinkish Theme.

Windows 10 Style

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.

Game Red Highlighted

A thorough red/dark gaming theme, no distractions, strong red details and a red indicated current tab to never be confused and always remain focused.

Verdurous Darker

A dark, forest theme.

HEKISU1

HEKISU1, BY: HEKISU1, Thamyris, Thamyris71.

Clean and Professional

Clean and polished theme for Thunderbird and Firefox.