here's the theme i made for myself. its pretty much a stock theme with tweaked colors, transparencies, improved battery meter and added homescreen hotkeys
its called Athens cuz of the wallpaper im using. its a photo i took when i was in europe.
u can change the wallpaper, but the background of the app list (as well as the call screen) isn't changeable. you would have to insert the new background into the theme directly... no way to do it on the device.