Wheels will be either blue or white as far as I know. I think he wants whitewall tyres so I'd suggest blue rims. They were originally blue I think, or one was blue at some point. Was a bit of blue under the silver in a few places but can't remember if it was one wheel or scattered around the set.
Wheels are a lot cleaner after the second blast. Just wish the process was quicker. Can never have too much air flow when you start sandblasting. More pressure wouldn't hurt either. My comp is a lower pressure at around 100psi but decent volume. I have another compressor head unit that is a high pressure two stage one but I need some fittings to make it work.