The third and most troubling theory is that in her four-year-old soul she’s already come to believe the color of snow is preferable to the color of. . well, pick your racist poison — chocolate? coffee? mud? With what brown does she associate? Since she came to live with the Nordhocs, she’s noted more than once that her skin is one color and Zan’s, Viv’s and Parker’s another. How come, the girl asks resentfully, returning from preschool where there are no other black children, you get to have light skin while mine is darker?