To the unopinionated ToryBoy
Painting GRP structures doesn't help visibility. There have been a couple of studies published in Sailplane and Gliding done with motor gliders, and they found that there was no significant improvement by adding reflective panels. In fact at some angles it made things worse as the colours broke up the outline.
I would also ask the engine followers how many of you have your strobes on all the time? Does it actually make you that much more obvious on a bright day?
Cheers
John