Add-ons

Blends in well with tab titles, smooth horizontal transition, overall easy on the eyes.
Don't forget to enlarge the toolbars as much as possible, otherwise Remillia's face will be partially hidden.

Rated 5 out of 5 stars by AV3rse on Jan. 7, 2018

Rated 4 out of 5 stars by Firefox user f9a88d on Nov. 18, 2017

Rated 5 out of 5 stars by Firefox user 3d9e00 on May 16, 2017