Different-colored monsters happily howl, growl, and roar for more as they mix and match primary colors to make new shades and hues. While everyone might know that yellow and blue make green,
it has never been created in such an unusual and celebratory way! In this wild and colorful romp, small gray monsters morph into big, colorful ones as the book progresses. Never has color been
presented in such enthusiastic and exuberant style. Never have monsters been so creative and appealing.