You know, after having the opportunity to take a F-18 model and place it right next to a real-live, no-kidding F-18, the light ghost grey on my model looked EXACTLY the same as the light ghost grey on the real airplane.
"Scale Color" is a myth, specifications of hue, brightness, and RGB values do not arbitrarily change as the are painted gets smaller. There is NO color difference between a one-inch square of tan, and a one-foot square of the same tan.
Also, I've so far never had a model that didn't match photos of the aircraft, as long as I stick to the painting instructions.
However, it doesn't much matter to me, as I usually put my models in whatever paint scheme I feel like at the moment.
When was the last time YOU put a 1/144 scale Panavia Tornado in the Southeast Asia Camouflage scheme?