The colors are nice to costumize. Unfortunately UNUSABLE because after opening Firefox it takes an additional 2 Minutes loading the theme before you can start doing anything.
How on earth can you design an addon JUST for some colors consuming SO MUCH ressources??? I really have to control my anger here. Unbelievable.

NO ME DEJA USAR LO QUE YO CREO , QUIERO FONDO GRIS !!!!, PORQUE NO HAY UN FONDO GRIS???,,,O ES BLANCO O ES NEGRO UNA PORQUERIA..!!!! ESTOY PODRIDO!!!

可以增加其他语言吗？

GREAT ! Easy-to-use and love some of the presets. Would be even awesome if, at startup, we do not notice the switch between the default browser theme and the new one with the plugin's version (in my case, switch from browser's integrated orange theme to a dark preset from this plugin).

Really fun and easy to use add-on :)

Endless fun customizing the colors of the various user interface elements.

It's great and easy to use. Although I'd like to have an updated version of the preview for Firefox proton

Incroyable add-on, très facile à prendre en main.