El Rojo No Está Enojado, El Azul No Está Triste - Luis Amavisca - Bog

"Three friends, Bear, Deer and Squirrel are having a picnic. They are waiting for their friend Fox to join them. When he turns up wearing a blue t-shirt, everyone assumes he's sad. Fox is confused--why do they think he is sad? He feels happy. Why does blue have to be associated with sadness? And why is red linked to anger? Fox wants to be free to like and wear all different colors!"--Publisher description.