Huh, it might be true, I don't know. I've been feeding them beet pulp for a couple of years but I haven't noticed any change in their color. I really don't pay that much attention to them, though. And none of them are palomino, 3 of the mini's are various shades of dun and one is white.
Better Barbaro news today.
http://www.foxnews.com/story/0,2933,243162,00.html