Nice Puntuado con 5 de 5 estrellas

Really nice and smooth theme!
But I wonder how do you accomplish that, for example google background is also all black?

Esta valoración es de una versión anterior del complemento (5.1.3). 

Thanks for your review. The page you see on screenshot is the one which appear when you type "about:home" in the url bar. By default it is in light color, but if you install "Stylish" addon and then install a custom dark style I created for this "about:home" page, you can get something looking like on screenshot. So once you would have installed Stylish then go here to install my dark style >

By the way, for questions and/or bug reports it s better to use the support link in the addon description and to not write here. Normally I don t offer support here