Interesting. We have Standardbred race horses and it's been my experience that grey horses rarely win. Occasionally there is a good one, but that is the exception. There are a lot of old wives tales, and many betters rely on them when they place their bets. You can be logical if you want, but I'll bet the superstition betters probably win just as often as not. We knew a man who always bet the same number in each race and usually came out ahead--wouldn't tell us what number it was.
Sue