looks great but I cant seem to get "Specify a colour" to work, got it to work on one site but idk if its a bug or I am doing it wrong somehow

Easily one of the best add-ons. Turns Firefox into one of the most beautiful browsers in the market.

perfect, just like safari :)

Its the BEST appearance extension ever. Most themes for Firefox are tolerable, not beautiful. This ext provide one of the best colors and borders scheme like mine - Borderless. Its feels really good with different color for each site, the most beautiful Ive seen from themes.
Thank for improving user experience as much as possible (for me ig)