This addon is awesome. I don't know how people can live in the world of white without this addon! Only complaint is that it doesn't seem to work on linkedin.com and in not-to-frequent cases it will change the background to a patterned gray/white dot background.

Take too much resource on some website

Nf

Very very good component, it works very well, it saved my eyes. I strongly suggest them to anyone.
I suggest, if possible, to autmoatically enable dark mode when Firefox's dark mode is enabled (probably inheriting system-wide dark theme) and disable it when light mode is enabled.
Thank you again for this wonderful add-on!