Some time ago I was thanking you for implementing theming so well that it worked correctly with the existing plugins (Darkreader, and “Dark background and Light text”) that I need to function.
Unfortunately, this is now broken on both the desktop browser, and particularly badly on the mobile browser. (Both using firefox.)
In both cases, the background is being overwritten with a non-black value.
If you need any help debugging this, please let me know and I’ll be happy to help.