This edition to the Tractor Mac series is a board book that teaches children about the different colors of the rainbow. Tractor Mac and his vehicle and animal friends, including Sibley the horse, Pete the pig, and Goat Walter, show kids around Stony Meadow Farm in order to observe the colors of various objects found on the farm. "Clear, uncluttered design makes this age-appropriate board book useful, especially for young fans of big machines." - Kirkus Reviews Billy Steers is an author, illustrator, and commercial pilot. In addition to the Tractor Mac series, he has worked on forty other children's books. Mr. Steers raised horses and sheep on the farm where he grew up in Connecticut. Married with three sons, he still lives in Connecticut.