I think i already suggested this to you, but you need to talk to a autobody supply store about making a custom brew to do the hyper silver.
Im gonna be doing a reverse by starting with coarse silver and shading it with carbon pearl to get the desired darkness. that way you get the shimmer of the pearl in your midcoat, and the coarse aluminum flakes in the base coat still show through the shade.
you can also start with either a flat black or a black mica base coat, translucent silver midcoat and clear.
id be very surprised if you can actually get the paint code for it, but you can come very close with a custom mix.
looking at my wheels again close.. looks like a black basecoat with corse metalflakes, shaded with transparent silver.
good luck, and don't be afraid to experiment with some custom stuff. spending all the time and money to go straight up hyper silver to me is kinda boring when you can do soooo much more.