Rare factory option on this Porsche Cayman GT4...?

I was at Cars & Coffee - Aliso Viejo, CA this weekend and was amazed to see my first GT4 in the "wild."

But, more impressively, was what looked to be a rare factory option installed. I figure it must only be available to cars in this color.

http://imgur.com/a/gnD9a

submitted by jasonbordeaux
[link] [55 comments]