Late V6 Engine Paint

Has anyone looked at AMC Blue Poly (metallic) as a match for the engine paint on late V6 engines? Looks very much like the paint under layers of grease on my '70 engline block and has the blue/green color discussed here before. Apparently, AMC used the Blue Poly for their engines from the late 60s to the early 70s. Maybe this was one of the early influences that AMC had with Jeep production after acquiring the company from Kaiser.

 

Or maybe PPG #15119.