I SPY … rainbows! Take a Look! Can you find a Middle Grade book that features a rainbow on the front cover? Add to our collection in the comments. Share this:TwitterFacebookLike Loading... Related Author: Middle Grade Carousel A mother-daughter duo dedicated to all things Middle Grade, CJ & Elza run a series of monthly reading challenges. You can also find them on Twitter: @kindeladies, or Instagram: @mgcarousel. View all posts by Middle Grade Carousel