I'm a fan of a clean hyper silver wheel colour, but that's a bit too plain for you I think. I'd go with an anthracite with a bit of a blue or gold flake
If everything else is blacked out, make em black or gun-metal for that stealthy look.
Otherwise (dont shoot me) gold. I think gold looks pretty rad as long as its done properly and matches the car. You will get haters though.