Yeah, that's what kept me from purchasing the Cusco. It would be another $150 to get it powder coated to black or red. I don't understand why Cusco doesn't offer this in different colors besides that terrible blue. I bet they would sell a ton if they offered it in a few color choices.
Intake manifold takes a significant amount of direct heat... exhaust tips do not.
I measured the temp of the exhaust tips on my Supra after a spirited drive and it was 126f. Nowhere near the temp required to deform / liquify powder coating.
I'd be careful powder coating. While I have no personal experience, I have read on multiple forums that the heat can liquidize the powder. There are several photos showing goopy, messy results due to the heat.