The best you can get

Compatibility is very good, but the only drawback is that it will not switch automatically according to the time period

the best dark mode add-on out there.

It's rly great and helped a lot to get rid of these annoying white pages.. sadly it's crashing lately more often after the FireFox update 80.0.1 ..I hope that u look into the problem.. it's rly need a new update

This is by far the best FF add-on I have, and it was just added a few hours ago. Nothing online is as important as being able to comfortably read and view images when browsing. If your eyes get hurt/strained it not only impacts your browsing experience but it can mess with your eye health long term. This add-on is allowing me to surf at night with minimal to no room lighting and not be blinded when a normally overly white page loads. I have just begun to play with the wide range of customizable options available. I am feeling a donation is heading to a dev after I play with this a little more and learn how to best use it.

This addons/extension is very good for my eyes because makes the websites dark so my eyes is not hurted anymore.