Book excerpt: Color in a world of beautiful rainbows with this book in our popular I Heart series! Take out your crayons, pencils, pens, or paints, and start coloring in a beautiful world full of rainbows, luscious plants, flowers, and adorable animals. Complete with intricate designs, pretty patterns, and the prettiest rainbows you've ever seen, this coloring book will entice children and adults to bring these scenes to life with a rainbow of hues.