er ... I don't know if there is a way to make it match a background but look at post 5 in the begining of this thread. Thats a custom taskbar. I guess its just a custom icon hack though so wouldn't allow background.
I use the cdma version from here :
http://forum.ppcgeeks.com/showthread.php?t=78019
And Wisbar Lite because I found that regular wisbar was to bloated.