The truth is that it is a virgin, perhaps impractical, but visually very interesting and full of possibilities. The 3D theme made with CSS3 that has developed by Nathan Barry may be the first of its kind, but I'm sure we'll see many more that take advantage of the features of CSS3 .
At the moment, as the only browser that supports CSS3 completely is Safari you can only enjoy it in all its beauty with this browser, because in Chrome or Firefox you'll see a nice, cool theme, but much less impressive. The best thing is that you download the latest version of Safari to enjoy it.
The theme is free so you can download it and try it for some special project you have out there or, if you have Safari, .