I have sanded, baked, and urethaned a piece of PVC pipe. I would now like to improve the appearance of the pipe, as it will not be covered in wire as my other form is. I would like to paint it, but don't know what paint would be best. I have a can of spray KRYLON paint I'd like to use, but I'm afraid to use it as I don't know whether it will lower the insulating properties of the pipe. Anybody have a suggestion?