The back of the Cayenne is well designed which is why I would put the steel apron on the slightly weaker front to make it look more dynamic. The rear already has enough steel details.

We all have seen balck Cayennes on the roads and they do look great. But in my opinion black is a boring choice since just about every 2nd or 3rd Cayenne rolling on the roads is black. I would go with the blue colour you see on this gorgeous Turbo S below