OK, here is one of the color pallets... I got BK08, and Scott is thinking WH08. Some colors are not available in formula approriate for wheel use (High UV and corosion resistance) And as the page says, color rendering is not accurate on most monitors, so look at a real color chart, or preferably, an actual piece of material done in that color...
Cardinal
they also carry Dupont, Spraylat, and Tiger/Drylac, but I couldn't easily find any swatches for those, and didn't care since it wasn't what I picked...