Orangine

Grey and orange theme

Green over solid black

A simple green over black solid theme. Based on Luminous Matter theme.

Black Persona

Synthwave_Gradient

Synthwave Gradient for Thunderbird Email

Polski błękit

Motyw by QLIN

SpaceShaman Dark

Step into the dark side of the force and discover the secrets of the cosmos without the risk of eye damage!

Dark + Pink

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

Neat Dark Theme - Pink

A Pink Neat Dark Theme for Thunderbird

Dark Imagine Theme

Simple black theme by Imagine.

F R E S H

A FRESH way to browse the web

Reece's Mixed Dark

Dark theme with blue accents.

Polish blue 1.0

Motyw by QLIN

SimpleFox-Like

Minimal.