This is a great add-on and I keep it ON by default. One important improvement for me would be this:
The default behavior for text fields (e.g., username/password fields) gives me yellow background with white lettering. It would be better to have either darker lettering or darker background. As it is, it is very hard (next to impossibile) to make out anything.
Other than that, perfect! THANK YOU :-)

Делает сайты темными достаточно корректно. Но при открытии любой страницы (даже уже темной), на экране появляется сначала белая страница, потом уже темная - это очень раздражает, особенно ночью. Ну и естественно расширение замедляет загрузку страниц.

Works great and deserves it's 5 stars.

I have been using this for years on Firefox and on Chrome and it works very well. It makes things not hurt eyes.

Excellent job of darkening. 4 stars only because: I can not (afaik) darken, for example WWW.google.com but NOT DARKEN WWW.google.com/maps. I want most sites normal so I use the INVERT LIST ONLY. Abilitiy to add subsites would help.

I like this extension, one issue im having is It's kind of annoying how it automatically dark's every page. It would be nice to have all pages "Normal" until I toggle to dark. Maybe have a toggle to set pages automatically or to manual "Dark". Just a suggestion. I'd give this 5 stars if it wasn't for the auto dark thing..it keeps turning some pages to green or an off pink color its why im annoyed, it is a good extension though. If you don't mind constantly fixing pages..