HEY DAY - Alli KochTake a walk down memory lane as you color this book's fun retro designs and beautiful floral patterns. Take a walk down memory lane as you color this book's fun retro designs and beautiful floral patterns. Heyday includes 40 illustrations, including bonus velvet coloring pages, hand drawn by bestselling author and artist Alli Koch of Alli K Design. With a variety of her signature floral drawings, as well as throwback patterns inspired by the '60s and