Rated 5 out of 5 stars

by Firefox user 6933c7 on Nov. 22, 2018 ·

Leider nicht mehr mit 60.3.1 (64 BIT) kompatibel. Schade, es war so schön! Bitte, bitte nachbessern. Tausende Benutzer werden für die mühevolle Arbeit danken! Viele Grüße nach NL!
Translation Google:
Unfortunately not compatible with 60.3.1 (64 BIT) anymore. A pity, it was so nice! Please, please rectify. Thousands of users will thank for the hard work! Greetings to NL!

This review is for a previous version of the add-on (2.0.34). 

by alfredkayser (Developer) on Dec. 13, 2018 ·

I am working on it, but it is a lot of work. Mozilla has dropped a number of key styling features (such as -moz-border-colors) which forces me to to redo a lot of the styling.
Hope to have something soon!