Beautiful skin! Looks very neat.
First minor issue I noticed: the overlay notification (for example “mounted removable storage ‘name of device’”) is too small, I am only able to read “mounted removable”, by the time it starts scrolling, the notification disappears.
This could be an issue when the notification states an error: you might not be able to read what causes the error.
Another issue for me: TV Shows> Fanart viewtype: the text of the tv show titles is too tiny, a bigger font would make it much better readable.
and a little feature request: the ability to use a folder containing photos (from the Pictures library) as background (perhaps only when not inside Movies or TV Shows or Music Videos sections).