Scanned from a badly degraded color transparency (80-GK-6265) at the National Archives, College Park.
While much of the original color has been "restored" via PhotoShop, the color scheme of this aircraft is somewhat of a mystery. While the vertical tail seems to be Intermediate Blue, the rest of the aircraft seems to be painted Glossy Sea Blue. The three yellow wing stripes may be repeated on the left wing, but there's no indication of the stripes' purpose...
I wasn't referring to the seller, but to the copyright notification at the top of most of the drawings. It's bogus, since the folks claiming copyright were neither the creators nor the purchasers of the original rights. The seller is perfectly OK selling the drawings in this case, and you're perfectly fine - and much appreciated - posting the drawings here.