The newest update improves both performance and looks, and has yet to crash or freeze on me. On top of that, Firefox has finally added dark theme support to the Library. Hands down best extension of its kind.

Tried it all, this one is the best. A lot of options.

Works really well, fantastic!

Glad this add-on is back. The best as of April 2020. Don't even bother with the other ones, I've been through them all

O melhor de todos!

Excellent! Just what I was looking for.

It's amazing. I'd never have thought that it's possible to 'darkify' web pages in this quality. Almost like a horde of little, dark loving, aesthetically talented people living inside my browser.