(http://imageshack.us/photo/my-images/197/pngtime.jpg/)
Looks more slick than the old method.
The .png's look really nice! I know you said that using the .png for the buttons wouldn't allow the creation of the old Text based buttons but I don't think that is an issue as all of the new skins should be image based, which will allow the creation of some even more cool skins. Nice addition!
This looks very slick indeed. Well done.
Looks great, nice work!