You know if you really really look at an airplane in flight, wings level, the bottom of the wings at any distance at all is like black and white TV....shades of gray.....So the color choices really doesn't make a difference......the contrast in shape is what is important.....
Now bank the airplane with the sun on it and you really have a beautiful image.....the colors leap out at you especially with a deep blue sky or a dark cloud as a back drop
The colors I see best at a distance are pink, yellow, and orange...
In case you see the neon coatings beware they fade bad in sunlight.....avoid chrome and light blue as they disappear in flight...
Good Flyin to all