Cobalt2

A faithful port of the original Cobalt2 theme by Wes Bos.

Kitten Wears Beanie

Cute orange kitten in a beanie

Reece's Mixed Dark

Dark theme with blue accents.

Muted Sage Gruvbox Dark

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

Black Persona

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.

Green over solid black

A simple green over black solid theme. Based on Luminous Matter theme.

Windows 10 Style

SimpleFox-Like

Minimal.

Minions v6 by CP

Dark Imagine Theme

Simple black theme by Imagine.

dark myth

Tiger eyes turquoise (light theme alt)

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.

just golden glitter

★Theme Designed by <b>candelora ©</b>★
Copyright Original Photo by <b>incolor16</b>

TAGS:
bokeh,bubbles,circles,colorful,yellow,metal,glamour,
look,fantasymakeup,woman,beauty,bright,shine,
fairies,firefox,candelora

New Dark Bird

A Thunderbird theme with the new Thunderbird Logo.

Shirasu Azusa Theme

Adds theme of Shirasu Azusa from game called Blue Archive.

Anime, Blue Archive, Cute, Dark, Game, Shirasu Azusa

Dark15_Th

Dark Theme CR style Win11 for New Thunderbird 15.

HEKISU1

HEKISU1, BY: HEKISU1, Thamyris, Thamyris71.

Rose Pine Dawn

A theme based on the Rose Pine Dawn color scheme (https://rosepinetheme.com/)

ULTRAWIDE ANIMATED MATRIX

Extended Version for Ultrawide Monitors