Bob,
I've noticed that I (46 yr old) have difficulty seeing the nose orientation and wing orientation on my Passport on clear blue sky days and I'm beginning to wonder whether it has something to do with the glare from the shinny monokote and automotive paint we typically use. I would be interested in experiementing with a flat paint and monokote scheme. On clear days my plane looks hazy and I'm thinking it could be the shine from the scheme more so than what color combinations we are using.
Food for thought