Unfortunately, it doesn't work on wikipedia-at least not for me.

it works well but performance impact is high

Can you "darkify" some images? Sometimes all is dark and there are super light images it's horrible ☹️

Edit: they have the background of the old colors ☹️

Edit 2: some website divs with a the same background color as body but when dark reader is applied, their background color is different ☹️

Definitely helps me with this affliction to light brought on by migraines. Thank you 😊

My eyes are saved.
I would like to have a "dark-ish" mode so as to not have white on black (which also strains my eyes), but I manage with just making everything sorta greyscale and increasing the sepia value.
Would recommend.

Works really well for most sites, but I'd love to be able to tweak specific websites in finer detail than picking which dark mode style and color choices. Namely, making Google Docs/Sheets/etc UI grey and black but keeping the document content itself intact. It's annoying having to overwrite code in the dev tools every time I want to use Docs and preserve colors when formatting is very important (since those changes are wiped out once you close Firefox).

Dark theme detection also usually works but can be spotty.