Here's a question. Sorry if it's obvious - I'm trying to understand this because I am thinking of doing the same thing. Is it not possible to do it without repainting or powder coating? Just strip off the titanium-look paint and then just leave them as alloy colour? Presumably they need to be lacquered.
Can you go from this
to this
... without repainting?
I think I prefer the unpainted alloys on a black car. It gives it a lift (NB not the same car, neither is mine and I appreciate the second alloy is much more scuffed than the first)