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Alpenglow

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

Rated 5 out of 5 stars (1)
15 users
Updated July 15, 2021

Luminous Matter

A simple black and white dark theme.

Not yet rated
4 users
Updated June 22, 2021

Nord Dark

Inofficial Nord theme for Thunderbird

Not yet rated
43 users
Updated May 25, 2021

irasutoya01

Thunderbird 78 以降用に使えるテーマを練習用に作ってみました。
Very simple theme, which uses only public domain illustrations.

Not yet rated
1 user
Updated May 12, 2021

Dark theme for Firefox

A dark Firefox theme for your web browser. It's simple and coherent.

Not yet rated
7 users
Updated April 27, 2021

Dark + Pink

I made it with Firefox color and just added stuff to the manifest to make it valid.

Not yet rated
5 users
Updated April 18, 2021

Dark Night Arcturus X

Dark Night Arcturus X theme for Thunderbird by Nyquisteroux.
This is a very dark theme, based on grey colors with orange and blue elements.
Becouse using of experimental functions, restart Thunderbird after apply the theme to see all effects.

Rated 5 out of 5 stars (3)
190 users
Updated April 10, 2021

Arc Inspired

A Thunderbird theme inspired by the Arc theme.

Rated 5 out of 5 stars (1)
28 users
Updated April 1, 2021

Purple Praline

A purple theme for Thunderbird

Not yet rated
7 users
Updated March 22, 2021

Dark Night Arcturus

If You like this theme, please try "Dark Night Arcturus X" theme, which is based on "Dark Night Arcturus" theme, but has more elaborate details and is just nicer, becouse I'm going to end the support for "Dark Night Arcturus" in the near future.

Not yet rated
26 users
Updated Dec. 3, 2020

Dracula Theme for Thunderbird

Dracula theme for Thunderbird.

Rated 5 out of 5 stars (1)
240 users
Updated Nov. 26, 2020

Ghost Rider

If You like this theme, please try "Dark Night Arcturus X" theme, which is based on "Ghost Rider" theme, but has more elaborate details and is just nicer, becouse I'm going to end the support for "Ghost Rider" in the near future. Thank You very much.

Rated 5 out of 5 stars (1)
23 users
Updated Nov. 23, 2020

Thunderglobe

A Thunderbird version of the popular Fireglobe theme for Firefox.

Rated 5 out of 5 stars (6)
189 users
Updated Nov. 23, 2020

Dark Night

Dark Night theme for Thunderbird by Nyquisteroux.
This is a very dark theme, based on black and grey colors with blue elements.
If You like this theme, maybe You like also my newer dark theme: Dark Night Arcturus X.

Rated 5 out of 5 stars (1)
173 users
Updated Nov. 18, 2020

Panda Fox (for birds!)

My Panda Fox theme, just for Thunderbird instead of Firefox

Not yet rated
19 users
Updated Nov. 10, 2020

Numix Blue (dark)

Numix background with some blue accents, optimized for use with dark OS themes

Rated 5 out of 5 stars (1)
241 users
Updated Oct. 5, 2020

Breeze (Plasma 5) Arch Linux

Breeze (Plasma 5) + logo of Arch Linux

Not yet rated
10 users
Updated Oct. 2, 2020

SSC Napoli by Rivetti

SSC Napoli by Rivetti.

Not yet rated
1 user
Updated Oct. 2, 2020

The Hunting of the Snark 2

Chocolate brown colored theme with a detail from an Illustration by Henry Holiday to Lewis Carroll's "The Hunting of the Snark"

Not yet rated
5 users
Updated Sept. 19, 2020

Digital Dreams Online theme

Simple red theme with DDO logo

Not yet rated
6 users
Updated Sept. 16, 2020