Minions v6 by CP

Blue-Fox_by_Valdi

Game of Thrones winter Stark

Wolf House Stark. Game of Thrones, winter is coming.

You liked this theme see other themes that I did you will love. Access the link below.
Link:https://addons.mozilla.org/pt-BR/firefox/user/leandro_CE/?src=addon-detailLobo da casa Stark.Game of Thr...

yahane_pattern

yahane_pattern, BY: HEKISU1

Reece's Mixed Dark

Dark theme with blue accents.

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.

Pierres sur fond vert

Image de pierres sur fond vert avec écritures vertes

Game Red Highlighted

A thorough red/dark gaming theme, no distractions, strong red details and a red indicated current tab to never be confused and always remain focused.

SSC Napoli by Rivetti

SSC Napoli by Rivetti.

Shop Khởi Nghiệp Theme 1

Theme Designed by Shop Khoi Nghiep

Gelbe Blumen

ein sehr gelbes Thema für Thunderbird

BVB Borussia Dortmund 09

Borussia Dortmund update thunderbird 78 - congrats TheM2K

Digital Dreams Online theme

Simple red theme with DDO logo

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"

Breeze (Plasma 5) Arch Linux

Breeze (Plasma 5) + logo of Arch Linux

Purple Praline

A purple theme for Thunderbird

Dark + Pink

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

Dark theme for Firefox

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

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.

Verdurous Darker

A dark, forest theme.