Clean and Professional

Clean and polished theme for Thunderbird and Firefox.

Cobalt2

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

Grey and Grey

Just Grey

Color Connection by MaDonna

My wallpaper to match is at: http://abstract.desktopnexus.com/wallpaper/1964290/

Alpenglow

The legendary 'Firefox Alpenglow' theme now available for Thunderbird.

Pastel Gradient

Galaxy dark

Dark and clean galaxy theme for firefox.

Material Grey

Based on Google's material design theme.

Dark Wood Bird

Un thème bois sombre avec logo Thunderbird

ANIMATED CAT LICKING YOUR SCREEN

If you are allergic to a thing, it is best not to put that thing in your mouth, particularly if the thing is cats.
~ Lemony Snicket

TAGS
black kitty cat yellow eyes pink tongue white whiskers animated png feline sandpaper kisses

=^..^=
(") (") S...

Stylus Green

Stylus Green Persona, BY: Michael E Herndon, Thamyris, Thamyris71.

fractal frost

★Theme Designed by <b>candelora ©</b>★

Copyright fractal image base by <b>magnusti78</b> on deviantARThttp://magnusti78.deviantart.com/art/Frost-88329408TAGS:
flowers,nature,bloom,blue,cyan,white,colorful,light,bright,
sunshine,spring,summer,fantasy...

Abstract Black

Dark electric violet

Dark and violet theme for Thunderbird by Stonymontana

Carbon Light

Carbon light is a nice-looking, simple theme and I think it suits best with the multi-tab display.

Fractal flame

Goupilmtos-2024

thèmes Goupilmt OS 2024 for thunderbird.

pastel fantasy

Rose Pine Dawn

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

Plasma 5 Breeze Dark

This is a simple theme that will match the Breeze Dark theme for KDE Plamsa 5.