The paint is Special Purpose Krylon X-Metals... got it at Wal-Mart... about $5.00 a can... It is transparent, so if you paint over anything, you see under it. But it has a nice anodized finish. The can suggests to use a base coat for painted metal, for chrome they recommend their X-Metal Converter. I just sanded down the chrome rims with 400 grit sandpaper and sprayed it. Seemed to stick good enough.
The picture is named 20-Foot-Paint-Job for a reason... it looks good from 20 feet away. Up close, you can see some of the chrome flaking off and bubbling on the rim. I think it came out decent enough though. I still am thinking about painting the spokes white, but may just stick with all black... less masking involved there.