Happily, 'This is really only meant to work in Windows 10' is somewhat inaccurate

[Deleted user]

The github landing page says, 'This is really only meant to work in Windows 10'. However, on my Windows 8.1 system, and despite the horrible limitations Microsoft imposed on Windows 8 theming, your extension enables me to set the colour of that part of the Firefox title bar that is unoccupied by tabs. That allows a proper dark theme - thus:

Admittedly, the actual window buttons remained themed by the crippled inbuilt windows engine, but, nevertheless: bravo, and thank you.

[spikespaz]

Glad to make something that people enjoy.