There is an addon for this actually. Adjust colors for your own pleasure and press F2 (or whatever you want). https://addons.mozilla.org/en-US/firefox/addon/dar

There is an addon for this actually. Adjust colors for your own pleasure and press F2 (or whatever you want). https://addons.mozilla.org/en-US/firefox/addon/dark-background-light-text/ https://addons.mozilla.org/en-US/firefox/addon/dark-backgrou...