Looking for a darker Firefox theme, that has some aspects of the new Firefox 4.0 look built inside? If so, check out NightShade. This slick dark theme is almost a perfect representation of how a great dark theme should look.
In the creator’s own words – this theme came about to be an updated version of the popular RulerDark theme. So if you have seen it before, this is probably where you saw it last. However, it appears the creator of RulerDark stopped updating it – so the new creator found a perfect place to step in and take over a great looking Firefox theme.