Yesterday I shared Pseutro Light with you – but did you know there is a darker variation on this skin?
The regular version of Pseutro is also very nice looking if you like simpler themes for Firefox. It does a good job at balancing the look and feel that Windows 8 brings to the desktop and makes Firefox feel a little ‘bit more of a member of the Microsoft family (let us all hope that never happens).
So if you like for things to match, Pseutro might be the theme you are looking for. You can pick it up on the Firefox Add-ons website.