The only reason I didn't switch to Quantum like everyone else was because I couldn't find a decent alternative to Dark Reader. Now it's finally on Firefox, but unfortunately, I still can't make the switch because Dynamic Mode slows loading pages, hangs when scrolling sites, and even hangs the entire program sometimes. Dynamic mode was the best thing that happened to Dark Reader. Brilliant feature. As soon as Dynamic Mode performance issues are fixed, then this will get 5 stars. I'll try to see if I can fix the issue myself, but so far no luck. Chrome will still be my default.

Need some fixes cause it broke my static theme.
Normal static theme, not dynamic.

Cool. but how do I turn it off?

Жутко тормозит на мобильной версии Firefox. Хотел с планшета почитать сайты, но не тут то было! Так как для мобильной версии Chrome нельзя устанавливать расширения, то специально установил мобильный Firefox и это дополнение. На моём Asus MeMo Pad FHD10 страницы грузились очень долго, прокрутка практически зависала по несколько секунд. На десктопной версии проблем нет.

This add-on is really great for people like me who prefer to use dark mode/themes all over. My OS is also always on High Contrast with White text on Black backgrounds. Firefox's Colors doesn't help much because most websites are simply useless when viewed with overridden dark colors and High Contrast. So I thank the developer for really good and useful work!
However there seem to be issues with some sites (bugzilla.mozilla.org is completely dark with nothing visible; GitHub fares a little better but still unusable). Performance is also a big hindrance - page loads and scrolling are completely off with this extension enabled. I presume the Chrome version may not have these issues but I prefer Firefox and would like to see this extension working well with it.

Kheb de add-on er nèt in gehangen, dus om dan nu al bebedeld te worden voor een daverende staande ovatie...

Great features! Buggy on Firefox though.