it works but sometimes it glitches and erases all the themes i have made, idk if it's just me or if this add-on is doing it

Nothing speacial. I just find good theme for myself and add it "Fankots Theme by Fantron".

COOL

jkl

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).