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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.

Rated 5 out of 5 stars (4)
165 users
Updated April 20, 2025

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One Dark

One Dark theme for Thunderbird.

Rated 5 out of 5 stars (2)
180 users
Updated April 20, 2025

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Material SubBlack Theme

Material Filled Subblack Theme

Not yet rated
12 users
Updated March 24, 2025

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Dark Night Arcturus X

Quite dark theme, based on shades of grey colors with blue and orange elements. Also try my new theme - Dark Shadows XT.

Rated 5 out of 5 stars (28)
1,623 users
Updated March 24, 2025

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Dark Shadows XT

Quite dark theme, based on shades of grey colors, with blue and green accents.

Rated 5 out of 5 stars (11)
158 users
Updated March 24, 2025

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Full White Classic

Full White Classic uses Thunderbird Light colors instead of OS colors.

Not yet rated
21 users
Updated March 13, 2025

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Almost Black

A very plain dark theme with subtle blues

Not yet rated
10 users
Updated March 13, 2025

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Cobalt2

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

Rated 5 out of 5 stars (3)
116 users
Updated March 10, 2025

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Raspberry Garden

Sweet nad fruity theme in crimson and green, not only for summer.
Screenshots: https://imgur.com/o7D4ft7 | https://imgur.com/WkeDhNE

Not yet rated
9 users
Updated March 6, 2025

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Cloudy Sky

A calm theme in different shades of blue for those with their heads in the clouds.
Screenshots: https://imgur.com/cJqEzhf | https://imgur.com/tbuqgGi

Rated 5 out of 5 stars (2)
42 users
Updated March 6, 2025

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Eldritch

Eldritch theme
https://github.com/eldritch-theme/thunderbird

Not yet rated
9 users
Updated March 6, 2025

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rambley

i have made my last mozilla version of this to Thunderbird! :)
PS: the support website is supporting me by likeing videos and subscribing. :) pls do that ok?

Not yet rated
3 users
Updated March 6, 2025

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n(d).white.fresh

A white fresh theme by neuro(drive).pro()

Rated 5 out of 5 stars (1)
35 users
Updated March 4, 2025

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n(d).dark.fresh

A dark fresh theme by neuro(drive).pro()

Rated 5 out of 5 stars (6)
93 users
Updated March 4, 2025

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Autumn Blush

A warm theme of a wood changing its colors, in red, orange and khaki.
Screenshots: https://imgur.com/J8X8nNp | https://imgur.com/u1PnUqU

Not yet rated
9 users
Updated Feb. 24, 2025

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Greeny Lemon

A refreshing theme with a delicate citrus flavor in yellow and green.
Screenshots: https://imgur.com/QKe1FZQ | https://imgur.com/aBVVKtX

Not yet rated
6 users
Updated Feb. 24, 2025

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Retro Cyborg

A distinctive theme referring to retro arcade games in turquoise and blueviolet.
Screenshots: https://imgur.com/mGno8eL | https://imgur.com/i5brkRR

Not yet rated
16 users
Updated Feb. 24, 2025

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Irish Coffee

Elegant and mellow theme for true gentlemen in different shades of brown.
Screenshots: https://imgur.com/UdyJoLr | https://imgur.com/wvkTQuN

Not yet rated
21 users
Updated Feb. 24, 2025

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Pistachio Ocean

Light and fresh, calming theme in pistachio and bright blue colors - not only for medics.
Screenshots: https://imgur.com/0hNFPjY | https://imgur.com/0Rma4Mn

Not yet rated
37 users
Updated Feb. 24, 2025

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Vioorange Warm

Warm, cozy, bright theme in violet and orange, ideal for winter or autumn.
Screenshots: https://imgur.com/NdKQA43 | https://imgur.com/uXtZpPw

Not yet rated
10 users
Updated Feb. 24, 2025

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