I found another new theme last night (for my Curve) on mobile.blackberry.com. It's called "Surreal". I don't have a program to pull screen captures but encourage all to check it out. This probably competes with "Today Plus" for the best theme they've ever posted. It's like a bottom dock zen, except the icons are across the middle. Also, on the aplications page, it holds 7 across instead of 6. The top header is very slick, with a real different battery indicator. Also, contrary to my initial gut, you can change the background and it holds it's special attributes.
I changed the background to the 2nd (red) one on the following page, which is from themes4bb courtesy of Larry Farmer.
Abstract Wallpapers-Go well with BB Bold 9000 - Themes4BB.com
WARNING: DO NOT DOWNLOAD IF YOU ARE USING 4.5 OS