Book excerpt: Emotions are sometimes described in terms of color: green with envy, feeling blue, and in the pink, to name a few. In this sturdy board book, Elmo, Grover, Big Bird, Oscar, Zoe, Bert, Ernie, and Abby Cadabby show toddlers how different interactions give rise to a range of feelings, at the same time teaching about color, consideration for others, and how language can be used in unexpected ways.