Probably the passenger seat. I have the color set to Green-Yellow #2, it is close enough, but not quite yellow enough for perfect match. (You can sort of see it in the phone button to the left of the ****)
I also bought a non-working Clarion M502 and I am going to try to change the LEDs from blue to green&yellow. If it works, I might get one of those to try as well. My only real complaint about the Kenwood is the front USB, that is great for thumb drives, but horrible for iPod/iPhone. I don't want any wires in the car, that stuff should be routed to console or glovebox. I have a 16GB Sandisk Cruzer Fit that works great, it sticks out less than the door for the usb port.