If you have three tops, I'd suggest taking one of the stock ones with you to a paint shop. Generally speaking, the paint is just sprayed on using low pressure on the gun so that the paint "spits" out of the gun. Then you go back over it with regualr gun settings. Any paint shop worth their weight should be able to duplicate it fairly easily, especially given a sample to go by.
Sorry Rob, have to disagree. The original finish was similar to the F & R valences & rocker covers.
Shutz first, using low pressure. Let dry. Semigloss black overspray. Two coats.