OP:Shoot me a PM if you're interested in pictures of modified PRS880 background colors.
I have a 2006 WRX and the 880. I recently took the face place apart and modded it so that when I choose "White" background my screen is still white, but the knobs and side buttons light up GREEN - almost matching my WRX dash.
With a little more exprimentations on colors/materials I would probably be able to get the exact same green, but what I did with mine is very good, and I don't need it perfect.
Blue was retarded in the car, and white just seemed "too white".......the mod came out great!
PS:
I have pictures, and was goign to write up a guide here............just didn't don't have time to sit in fron tof a PC. Mebbe 1 of those days...
PSS:
I like the HU so much that I'm gettin rid of my wife's Kenwood X890 (she doesn't liek the colors and controls on it; otherwisae a good unit), bypassing Alpine 9857 (for it's sheer lack of .....well, everything; iPod isn't everything for me and even the 880 can stand up to Alpine's iPod controls) and getting another PRS880!
It will be modded again- to suit the yellow/orange dash lights on the 4Runner.
Good luck with it.
-99