Great, but... Rated 4 out of 5 stars

This is great, and fits perfectly with Dan Rabbit's eGTK theme.

However, I have noticed one compatibility issue affecting at least two popular add-ons (and probably more). The userstyle and userscript editors within Stylish and Greasemonkey respectively no longer show up (making editing code, a vital function of these add-ons, nye impossible). I've contacted the developer of Stylish and he was kind enough to inform me that the issues (affecting several other themes also) may relate to an update to Orion (Firefox's syntax highlighting editor). It'd be nice if this incompatibility, which no doubt affects other add-ons also, could be fixed in the next release. For now, I have little choice but to switch back to the default theme whenever writing or editing userstyles/scripts.

This review is for a previous version of the add-on (1.0). 

thanks for your review!

I'm planning a new release with some improvements, but I don't have a schedule yet, maybe only in September because I have a tone of work now. I didn't know about that compatibility issue, I'll note that in my todo list for the next release.
I'm really sorry I can't fix that sooner. cheers!