My rear bumper is also a slightly lighter shade of orange, and the front is darker, but that was resprayed before i picked it up due to loads of stone chips in it! And its much more noticable when the car is dirty (like it currently is !)
My car was a Seat UK vehicle from new, so would have thought it would have been sprayed properly rather than being rushed at a dealer??
Also, my log book doesnt state
K1, only cupra. Is this the case for everyone else?