If
bumperplugs doesn't do it, I have a source at KnobMeister that makes StainlessSteel frames either polished or powder coated in a number of different colors. Here is the powder coated black one that I had on my Boxster S that our local
PCA region had made.
As long as we don't violate any Porsche trademarks and get the proper permissions we could probably have a Cayman specific one made up by them.