"Was Monarchos a bob-tailed nag? If only one "grey" has won the Derby then what's up with the "Grey Theory"?"
It's the same as the 3 theory. Honestly, if you watch tvg as much as I do, the greys do seem to be in the money alot.
That's because the greys are aliens.
I think there is somthing in the song about "somebody bet on the grey," but in my case, I bet two dollars on Giacomo in honor of my late grandma, who would only bet on the gray horse. She swore by this method of handicapping. It paid off for me today :-)