>>106369411
There are several of them. Midnight Lizard is the one I want to try first, I believe it's the most recommended. Then there's "Dark Background and Light text" or whatever it's called, but that's mostly abandoned. UltraDark is another one that I've seen shilled. And there are probably many others, it's not that hard to invert some colors.
At the same time, Dark Reader works well enough 99% of the time which I never bothered to change it or even to learn its functions properly, I only just found out about the keyboard shortcut (default Alt+Shift+D).