Themes available for download (and instructions):
http://www.blackberryforums.com/showthread.php?t=14164
I have made this available in ALX/COD format (zipped) for ease of installation on your part. Please see the thread for more details. Some issues I found just from testing things out on the simulator can be found here:
http://www.blackberryforums.com/showthread.php?p=95560
Enjoy.