This is an older post, but I thought I'd add my experience for the benefit of others.
Put new front tires on my Snapper LT. Its a bit rough but it mows nicely. Anyway, had to do something about the rust. The original Snapper color is a gray/silver so I thought I'd use this as a test for when I eventually restore my 226. Went to NAPA and got Duplicolor's Silver Wheel Paint. It is brighter and more metallic than what is on my 226. I'd post a couple of pics, but I must be doing something wrong and can't figure out how... :facepalm:
Anyway, Duplicolor goes on very nicely, levels well and makes a rank amateur like me look pretty good. It's pretty too but I'm not sure I'd say its a perfect match.