Probably the best but makes firefox load pages about 2-3 seconds slower:/

Utile, bella, dotata delle necessarie opzioni di personalizzazione e anche qualcosa in più. Premio con 4 stelle, non posso darne 5 per un unica pecca, tende a rallentare un po' l'apertura e/o il passaggio e caricamento di pagine e schede...

Awesome but on Firefox Nightly for Android, there is a few seconds long delay applying the dark theme when a new site/page is loaded, which means constant flashes of white themes.

It was working beautifully until about 2 months ago when website loading slowed down a lot. When I disable the addon the sites load up instantly. The addon works perfectly fine on Chrome but for whatever reason it's not smooth on Firefox which is a shame since I prefer that browser. Hopefully it gets fixed soon.

the only thing which annoys me is that the scrollbar also is changed and hard to recognize - please don't touch the UI itself

Os navegadores deveriam vir com uma opção padrão para o tema dark ou noturno para web sites (isso é muito util para quem tem problemas de visão). Alguns concorrentes já tem essa opção

Great add-on.
The only reason for 4 stars is:

it doesn't work properly on outlook websites e.g. https://outlook.live.com/people

please fix it Alexander
thank you!