MacOS – Dark theme for Thunderbird on macOS

colormacosthemes

Does there exist a theme plug-in or add-on that can make the Thunderbird on macOS looks mostly dark or black?

Best Answer

It's part of the default theme package in current beta versions (running b64).screenshot of theme settings in Thunderbird

In Mojave, it switches to the dark theme automatically if you change the OS to dark. However, whereas the dark theme in Firefox is pretty much complete, the theme in Thunderbird is haphazardly applied. I'm not running dark mode Mojave specifically because Thunderbird theme is off. See bugzilla entry here: https://bugzilla.mozilla.org/show_bug.cgi?id=1486205