GemBlock has released an interesting new theme called Luxury. The theme is free and from the feedback I am hearing is quite nice. Check out the theme at the following links:
Link for 8300:
http://gemblock.com/forums
Link for 8700:
http://gemblock.com/forums
Link for 8800:
http://gemblock.com/forums
Link for 8830:
http://gemblock.com/forums