Join Date: Feb 2005
Location: Detroit, MI, USA
Yes, there are people who have powercoated trems successfully. It is a very difficult thing to do well. The biggest problem is the thickness of the coating interfering with the parts fitting together. You have to work that out.
I would also say that if you want to change your hardware color, you should just sell your parts and buy new ones in the right color. You are going to spend more time and money trying to go the powercoating route.
DaveK over on the projectguitar forum is one person offering that kind of work.