better themes Rated 3 out of 5 stars

FT SleekDark or FT DeepDark are better dark themes

https://addons.mozilla.org/en-US/firefox/addon/ft-deepdark/?src=userprofile

https://addons.mozilla.org/en-US/firefox/addon/bloomind-ft-sleekdark/?src=userprofile

This review is for a previous version of the add-on (0.6.20120129).