No, it doesn't appear to be argent silver (not the argent silver that is/was used on Rallye wheels), but I'm not familiar with the SS styled wheels or their paint, and maybe there are 'different' argent silvers (depending on the wheel, year, mfg-( yes, even Ford and Chrysler had argent silver wheel colors).
I'd be concerned if I'd thoroughly mixed the paint and it *appeared* more clear than silver. Had you had the paint awhile? Did you stir to the bottom to make sure the pigments hadn't settled to the bottom? Otherwise, I'd go back to the paint provider and ask them to *recheck* their formula and the paint they sold you.