What version FF you are use? And theme name or link?

I've got the same problem as stated am I'm using the Firefox Developer Edition 70.0b5 (64-bit).
set browser.in-content.dark-mode to true with default dark theme extensions.activeThemeID=[email protected]
Nope, it doesn’t work ...



Try to restart Firefox.
Did not help.
It is necessary to include a dark theme in windows

:)
Only then begins to work
please, wait next release :)

Most helpful comment
please, wait next release :)
