Cordovan iridescent emulsion, according to Motortopia, is a relatively indurated Screen to bargain for gloss. Untrue in 1961, this distemper was a dingy, grey Screen form on the Buick Lesabre and other models from the lifetime. But, provided you must have cordovan iridescent stain for your automotive project it is imaginable to track down a function. It Testament demand a piece of legwork though, and you may have to settle for a modern remake of the classic shade.
Instructions
1. Go to a native auto parts retailer that deals in automotive paint and see if they have cordovan iridescent paint. It's unlikely they will, given the paint's relative rarity, but the retailer might be able to place a specialized order for you to get the paint you need.
2. Contact GM directly. If you haven't had success in finding the cordovan iridescent paint from other sources GM may be able to sell you the color. However, you may have to make a bulk purchase given that GM is a major retailer.
Go to Internet retailers like Nextag and Alibaba and search for cordovan iridescent paint. These two dealers are just a starting place, since you might also find this paint for sale in places like Ebay.3.