Rated 4 out of 5 stars

Extero is a reasonably good theme. I like its unique qualities, but a few parts aren't so nice. The tab bar, though one-of-a-kind, looks strange to me (maybe you could make a Stylish user style to make the tab bar more conventional?). Also, I like your "black-menu" idea, but I think that the menus should be a blacked-out/grayed-out version of iPox's excellent menus. In addition, I think that your buttons are great, but please add more shine! The icons are excellent, and the theme is compatible with every one of my 60 extensions! I understand that this theme is a WIP and thus I have given it an 8.