I just finished building a UH-1N, and will be showing it on a trailer after it has been shot down. I will be doing my first run with fire damage, and I will be painting the chopper in the typical USMC faded blue/grey, but I want to show primer in a few places, mainly right aroung the burn damage and impact spot. So the question is, what color would the primer be ?? By the way, it will be shown in the middle east somewhere, if that makes a difference.