Carlos the Chameleon (Hardcover) (ISBN-13: 9781739490621)

As a chameleon, it's in Carlos's nature to change his colours

in order to fit into his surroundings. Carlos is usually green, but can turn pink to join the flamingos, blue to match the frogs, and spotty to resemble the jaguars.

When the other animals find out that Carlos has been changing his colours in order to fit in, they reassure him that his own colour is beautiful and that he doesn't need to change who he is to be accepted and loved by his friends.