I like being able to see all the different colors from the rear. With the light bar being so prominent on the back it makes the color you choose have to compliment the red light bar. For example. It is a lot of red when you choose red as the body color.
it's not revolutionary but it sure is clean and looking at the whole tail light setup, it is suitable on a luxury SUV. Having an amber section would lose them some big points. In this day and age amber just makes cars look cheap and outdated.