[Argonavis (William)]

I was turing into a local street and almost failed to notice a car coming in the opposite direction. It was a grey colour, of course, which seems to be the least visible colour for a car, especially at dusk. One of my first cars (a Toyota Celica) was yellow, the colour of safety. Not that common these days, but becoming more so. What intrigued me was some research done in NZ on car colours and crashes. It found that grey cars are the LEAST likely to be involved in a collision. I have no explanation for this, and neither did the researchers. Do people who buy grey cars drive better than the rest of us? Are grey cars driven predominately by women and old men?
Anyone have any suggestions?