Well, I stand corrected. However, if you google military high visibility markings you will find formations of aircraft with and without high vis markings. One can really see the high vis aircraft better. Ever noted how all the roadside workers wear orange vests, certainly improves their visibility, same for hunters, crosswalk monitors, school buses, fire trucks, bicycle riders...etc. Out west I have only see two gliders with high visibility markings, one in blue, which did not improve my ability to spot it in the sky, but another glider had fluorescent orange markings and it stood out like a sore thumb! Not a statistically significant sample size, nor a controlled experiment, but I could spot that glider against any background even out of the corner of my eye. Vanity kept me from using the same color scheme as I thought it was too "in your face" and on the ground the color appeared to hurt my eyes it was so bright.

Thanks for the studies, glad I have an LED strobe, Flarm and good eyes!