Mike, if you're depicting Hartmann's mount it's 83 (or 82, the darker of the 2 greens) / 75 (grey-violet) / 76. Since no pictures of the belly exist, it is unknown if parts of the wing were bare metal. What is known though is that Hartmann's mount had the G-6 style small bulges on the wings (as well as the smaller tires), not the late G-6/K-4 ones as Revell provided. There's AM parts for it, luckily.
Eduard brassin G-6 legs could also be used, though I didn't bother this time.