A dab of blue here, a splash of red there, a goopy smear of green . . . everywhere. To the tune of It Ain't Gonna Rain No More," one creative kid floods his world with color, painting first the walls, then the ceiling, then HIMSELF! Before this feisty artist is through, he'll have painted his head, back, hands, legs, feet, and . . . Oh no - here comes Mama!Karen Beaumont's zippy text and David Catrow's zany illustrations turn an infamous childhood activity into raucous storytime fun, giving a silly twist to the fine art of self-expression. "