Secret agent 012 let me know that Plazmic 4.7 has been leaked. I have not tried it myself, but according to our agent, it lets you create themes for the 8900 Curve, Storm, and even the new 8530i.
Maybe my post earlier today got some attention
Check out Plazmic 4.7 at this link:
Theme developers, let me know if this works out for you!