while I enjoy dark reader, it makes websites look a lot better, but dark reader slows Firefox on Android to a crawl, I just cannot take it, and after reading an Reddit post where users were complaining about the sluggishness of Firefox on Android, a user mentioned dark reader being the culprit, so I disabled dark reader.
Problem solved, sorry, not sorry

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This add-on makes websites less painful at night.

Godsend extension, saved my eyes! Lot's of features & benefits.

Makes firefox agonizingly slow to load. not worth it.

Disabling it on a site/domain just likes to not work I guess!

Beginning today Dark Reader makes the address bar and menus very dark, if its theme is enabled :-(

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

I added this extension today, and from what I can see so far, it's by far the best dark mode add-on available. In addition to the exceptionally well-coded CSS replacement, one thing that makes it better than all others is the ability to have it OFF by default and then add just the sites you wish. This fits my style perfectly, as I already make use of a site's native dark mode wherever possible. (You can do the opposite as well - enabling always and just blacklist sites you don't want the extension to darken.) Along with uBlock Origin, Hide Comments Everywhere, and DownThemAll!, it's already one of my favorite add-ons. Great work, guys!