Add-ons
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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
Raspberry Garden
Sweet nad fruity theme in crimson and green, not only for summer.
Screenshots: https://imgur.com/o7D4ft7 | https://imgur.com/WkeDhNE
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
Greeny Lemon
A refreshing theme with a delicate citrus flavor in yellow and green.
Screenshots: https://imgur.com/QKe1FZQ | https://imgur.com/aBVVKtX
Retro Cyborg
A distinctive theme referring to retro arcade games in turquoise and blueviolet.
Screenshots: https://imgur.com/mGno8eL | https://imgur.com/i5brkRR
Irish Coffee
Elegant and mellow theme for true gentlemen in different shades of brown.
Screenshots: https://imgur.com/UdyJoLr | https://imgur.com/wvkTQuN
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
Vioorange Warm
Warm, cozy, bright theme in violet and orange, ideal for winter or autumn.
Screenshots: https://imgur.com/NdKQA43 | https://imgur.com/uXtZpPw
MintGreen Dark Soft
This theme matches well with LinuxMint and Cinnamon Theme.
Use an add-on like Darko to darken the message body.
Originally written for Firefox.
Thanks to calvinchd at calch.themes.thunderbird.net for original Gruvbox Dark.
Tested up to v128.
Classic BB Colors
Calm and simple, bright theme in classic blue and beige colors.
Screenshots: https://imgur.com/AWjqqfe | https://imgur.com/75u8TvJ
Blurple
Blurple: A calming blend of blue and purple.
Start blurpmaxxing today.
Arc Theme for Thunderbird
Another Thunderbird theme inspired by the Arc theme.
SpaceShaman Dark
Step into the dark side of the force and discover the secrets of the cosmos without the risk of eye damage!
To create your own collections, you must have a Mozilla Add-ons account.
