I have only a passing knowledge of Mormonism... something about God being a flesh and blood being from another planet who impregnated Mary the old fashion way, gold plates in a hat that only Joesph Smith was permitted to look at, Jesus in the Americas after the resurrection, Jesus and Satan are brothers, God would immediately strike down a white man for lying with a black woman. Pretty wacky stuff.... I mean, I guess not that much further out of whack than a virgin birth, triune God, or talking snakes.... but still.
Anyway, I have no idea if Romney is a racist in the traditional old-south kinda way, but I dont think he puts individuals on the darker end of the color spectrum with himself... not sure if thats "better" or just "less honest".