I think a version of email (the email client for POP, Exchange, etc) would be nice where it's all reversed, except the message itself. At some point, too much black is too much, but I love the lists in black. MotoBlur has a version like this on the Razr.
Also, for some reason, I couldn't get the calendar app to take. I actually tried both versions, and it never went to black. I much prefer this look to stock, so would like to fix it somehow.