Rated 4 out of 5 stars

As a red-green colorblind person (like 7% of American men) this is the best theme that I’ve found for Firefox. It demonstrates that usability does not have to be unstylish.

However, some fonts remain red and non-highlighted icons appear grey. Invisible - in other words. To use this theme, I’ve memorized where the icons are supposed to appear.

This review is for a previous version of the add-on (3.5.3). 

Unfortunately, extension developers do not rely entirely on themes for their appearance (as they should in an ideal environment), so I am unable to force all text to be white on black. There are additionally a lot of places in the Firefox browser that I can't yet modify the appearance of completely. Hopefully the Firefox 4 release will find and fix many of these issues.