I can't watch Facebook videos because it's dark too.

Yessssss

Finlay a extension that makes websites darker and that doesn't render half of the websites unusable. I also really like the option for manual theme editing, contrast and brightness.

It works fine. Some sites require one or more clicks to turn off dark mode (eBay), but no biggie.

This is doing brilliant job in darkening everything. For geek like me this extension is very, very helpful. Thank you @Aliaksandr Shutau for this add-on!!!