Definitely more attractive to look at than the default themes, but for usability reasons I'll have to pass on this one for now. The main problem I have with this theme is the color of progress bars and notifications. I guess black on blue isn't really my thing... If this theme were to be released in a yellow/orange/green/bright-red version I'd definitely use it. I concur that it would be great to have a bit less contrast in the gradients on buttons.