Stare at a single color for several seconds and then move your eyes to a white space. You will see a faint glowing image in a different color, the first color's opposite. This delightfully simple and funny birthday story, with animals rendered in Eric Carle's brightly colored collages, introduces the concept of complementary colors. Full color.
In this imaginative book, Eric Carle invites young readers to discover complementary colors while enjoying the amusing story of Little Frog and his colorful friends.

It's Little Frog's birthday, and Mama Frog gets a big surprise when the guests show up for his party--all the animals are the wrong color Little Frog tells her she's not looking long enough, and he's right.