I really wish I could participate with my build of the Gurney/Johnson Cobra but that build is already started, and I'm doing the restored version of the car, which was painted in its Daytona livery.
Monogram/Aurora would be closest. The car is still in an unrestored state in Miles Collier's private collection. There is also historical footage of this car on YouTube at Sebring in '64.
To my understanding, 004 was painted in Silver Blue and not the Pelham Blue. I talked to John Morton, who drove the car at Laguna Seca, and he's the one who told me.