Nope. I had them painted in a custom color similar to what you find on the BMW M3 chrome shadow. The actual process is one where you powder coat black first as a base layer. Then a thin layer of the silver chrome/metallic from some Italian company (
Color D.E.C.). Finish with the clear coat. My finish is a little less chromy, and more metallicky.
I was on my second repaint of the factory Carreras and thought the stock silver was just too plain for the cost of repainting.
Here's a good picture of what the color looked like factory. This how Porsche should have done it.
Anywhere where there's a curve, the light reflects off it just perfectly. You can sort of see it on my wheels in the pic above on spokes.
http://www.m5board.com/vbulletin/attachments/e39-m5-e52-z8-discussion/102623d1270307532-my-m5-oem-shadow-chrome-wheels-quest-refurbish-perfection-oem.jpg