“Who is warming me, Mama?” asks Baby Bear. “That is the sun,” his Mama says. “Baby Bear sees yellow.” Ashley Wolff’s tale of a bear cub’s first foray out of the den and into the wider world is a seamless integration of story and color concept book. Each of Baby Bear’s questions is followed by an explanation from his mother—the oak tree is waving, the trout is splashing, the strawberries are what smells good—and then a turn-of-the-page reveal that showcases a single color: “Baby Bear sees green” (oak leaves), or brown (trout), or red (strawberries), and so on. A wholly satisfying conclusion comes with the arrival of a storm, and the inevitability of a rainbow. Wolff has illustrated her comforting, pleasing story with bold, beautiful, hand-colored linoleum block prints. (Ages 2–5)