I actually didn't paint them, I just took them to a local automotive paint guy. He scuffed them down, and used a PPG adhesion promoter and PPG paint. To match the color I took the swim platform to the paint shop and they scanned it. I got the DuPont paint code, unfortunately I could not find a local distributor for DuPont paint. It was like $100 +$30 in paint.
I too am excited to get them on the boat, unfortunately I live in Michigan and have a few weeks yet before the boat will be out of hibernation.