Ceramic coated, Silver would be my thing. That would also keep the pipes from turning blue too. I think if you went with black the pipes would get lost up against the backdrop of the rest of the black bike. Just my .02 on the subject. I got the 3 Samson head pipe pieces ceramic coated and they came out really well. Yes, they are covered by the chrome heat shields but I also got it done to reduce some heat issues and I also didn't want any of that blueing showing around the top of the head pipe. It also adds a few points if your ever showing your bike to.
Holy thread resurrection! I traded the bike for a '12 street glide back in September. Still got the pipes in my garage wrapped with black exhaust wrap and spray painted black with grill paint. Craigslist sucks here and I can't sell them.