Nice

At least 4 times faster than Dark Reader. I dunno if it's bcos this is done right, or if DR is crap, (or both). You just need to know, I'm sticking with this one.
5 stars if I stay with it for a month.

No funciona nada bien con facebook

Whatsapp wird dabei leider komplett schwarz.

I really liked this app, the only problem that I have is when I'm in wikipedia and some equations doesn't appear because they don't change color, probably the problem is that the extension recognizes this equations as images.

Well, the extension does an excellent job "darkenizing" most of the sites without losing readability.
But it does the reverse if applied to already dark-themed sites (either natively or via a Stylus theme). Also, sometimes text becomes unreadable and/or images invisible after applying dark mode. Manually whitelisting all such sites is cumbersome.
To deal with these issues, I would prefer any of the following mechanisms in this extension (or even better, all of them being configurable):
(a) have different mode for each tab;
(b) save last used mode for each site and apply it when opening it next time;
(c) use a list of sites to apply dark mode to (rather than not to apply it).

most of the sites work perfectly, please check for "web.whatsapp.com" , the complete page becomes black without any color inversion for text