Rein, which in German means “pure”, is one of the best looking simple themes I have seen in a while.  Usually the more colorful themes catch my eye the most but this one is well worth checking into.

Here is a screenshot of this awesome monochrome flavored theme:

You could definitely say this theme was offbeat and a ‘bit different for sure.  You can pick up the Rein theme for Firefox 3 and up over at the Firefox Add-ons web site.  Also, when your there scroll down to the “advanced details” section for a few more tweaks of your own you can add to this elegant skin for Firefox.