I just wanted to change the standard white background, and use some dark background. Does this extension do it? I need my usual Top SItes when I open New tab, but i simply need to replace the standard white background with black background. Is it possible?

RUNNING LIKE A ANGEL

Very, very good.
Just one question: in the web site, please let the install option be stable. I had to understand that I must clic speedly, very speedly, to install it.
For other, very good and... excuse my poor english
ScalaAccaZero

Juist wat ik nodig had om www.google.be als mijn nieuw tab blad te openen !

Danke für die einfache, klare und übersichtliche Erweiterung. Firefox solllte einige der Entwickler mit in sein Team holen als "A-Team" und Grundlagen mit integrieren und ihr pflegt und erweitert deren/diesen Schatz dann. DANKE Als Eigenständiges Team somit "Queerdenker" ;-) Klasse das es euch gibt

A much needed add on!

Works brilliantly, does exactly as expected: ctrl + t opens the url I've indicated (my dark reader google.com and not the ridiculously glaring white mozilla page)

Seriously I can't stand using the internet without this.

Works well and overrides it to a different web address. Easy to use.