I painted my secondar turbo with a ceramic silver paint I bought at oriellys and it has held up just fine for several thousands of miles. I have everything torn down now to get ceramic coated right now though (ceramic chrome). I also looked into the turbo blankets on ebay and alot of people that tried them told me they get brittle after a while and hard. I chose to go with blankets for both turbos and for the intermediate pipe to help spool up, I went with DPdiesel a little more money but you get what you pay for ( at least thats my experience). The stuff I recieved looks top notch and from the others I have talked to they work awsome but I will be giving them the test as soon as I get it all ceramic coated and reinstalled.
FWIW I went with blankets because alot of people talk about how they help with spooling. I hope they help