I can't read white text on a black background without my eyes hurting a lot so this has been AMAZING.

works on addon store, somehow

good

Please make it work on kotlinlang org/docs/coroutines-basics html (URL's are not allowed).
I need to turn off the add-on, reload the page and turn on the add-on again to see the page.

Excellent add-on!

Just wish clicking icon on panel could switch on/off.

Very functional

Very functional and useful add