Whatever wheel comes on the ZL1, it won't please everyone. The good news is that they would be very easy to sell. Then I come into play, to supply you with some lightweight forged wheels, which probably will cost less than the GM cast aluminum wheels.
Of the two designs, I prefer the SSX showcar wheels more. I can't see them only being black though, that would turn off too many buyers. At least offer them like the Corvette does, in a few different powdercoat finishes. Black, gray, silver.
Tony