I think the dark days of Firefox theme development are over. Over the past few weeks I have been able to find some really amazing Firefox themes that are well worth checking out. At the top of that list is BFT Evo. The BFT Evo theme is really slick and smooth.
Here is a little more about the theme from the developer:
"BFT EVO", born from my first theme Bloomind FT Graphite "ashes", is a theme that has been created to fully transform the look of Firefox for Windows users. As all the Bloomind theme serie it contains no added functionalities and it has been especially designed for Seven, but rendering is relatively accurate on XP and Linux (I don t own a MAC so I can t test my theme on this platform to check if rendering is ok, but according to few MAC users who tried my different works, Bloomind themes seem to be MAC friendly too :) So if MAC users would like to try any Bloomind theme, they can force download and drag the file into the addons manager page to install it).
Want to take a closer look? Here is how it looks when you are diving deep into the Firefox button’s menus.
You can pick up the BFT Evo theme for Firefox at the Firefox Add-ons website.