Rated 3 out of 5 stars

I like it, but there are many quirks

-Can't disable transparency, looks weird and inconsistent and hard to read
-Comes with several themes, none of which are particularly good
-Causes firefox to reset it's non maximized size, so whenever I unmaximize firefox I get a randomly small box in the top left corner
-Needs a shortcut to quickly change the location of tabs (top left right bottom)
-Broke sidebar- I can't display any sidebar at all while this extension is loaded.

This review is for a previous version of the add-on (0.14.2013112901).