As distance increases, the ability of the human eye to determine color diminishes very quickly. We continue to see shapes, but colors give way to mere a gray scale. So, what we are more concerned with is shapes, and gray scale contrast. Select colors that are high in contrast. For example black and white is high contrast, red and blue, if you can turn the color off and see it in gray scale, is very low contrast. Low contrast is what your eyes will have to deal with at a distance....and...it becomes much worse under cloudy sky conditions, where the plane becomes a couple of shades of gray, and the clouds have much of the same shades of gray. Sounds like camoflage doesn't it? So, place the lightest, colors on the top of the wing, because thats where the sunlight hits it and will light it up very nicely, assuming there is sunlight breaking through the clouds. Apply the dark colors to the bottom side of the wing, because that side is generally facing down, and shaded from the sun by the wing itself, and so will tend to look dark anyway, no matter what color you apply. So, when in doubt as to orientation the top color will always flash back at you, while the bottom will always appear much darker and dull. Now when it comes to adding trim strips, remember that fine detail is quicky lost at any distance beyond 50 feet, and theres not much flying at 50 feet. small checkers become a blur. stars and pinstripes are lost. Big bold highly contrasting colors will be seen at reasonable distances. Make up some test cardboards and set them out at the far end of your runway and see what you get. It'll be an eye opener for you. Good luck.