Does what it says and does it well.

Occasionally have to turn it off to use or find some features on some sites but overall a real game changer and I rarely turn it off

Great Add-on, ability to disable it quickly with a macro by default is smart!

Super

It saved my eyes.

Works brilliantly. Easy to use.

Makes a few sites unreadable, and some have ugly colour schemes, but I can't really blame them. Besides, you can just turn it off in that case.