I have to go with Dragncar. Nascar racers will spend $1,000's to find 5 HP. That's how competive they are. As far as a SR-71 is concerned, what color would you like it to be, yellow, pink,or green. Those would be some real searius colors for a 90'000 foot spy plane! Black has allways been the stealth color of choice- SR-71, B-1 bomber, B-2 bomber, F-117 fighter. Those planes used special black paint because of its low radar signature. AKA, less heat loss for less radar reflectivity. So that pretty blows the idea of black paint transferring more BTUs. Pitch
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