TESB: This is a painting of Yoda for an unproduced children&#x27;s book.  For a children&#x27;s book, Ralph McQuarrie felt that the cover should be light and fun.  (Hence, the bright colors.)  While the children&#x27;s book was never produced, this image was ultimately used for The Empire Strikes Back Radio Dramatization poster, the cover of the Jedi Master&#x27;s Quiz Book, as well as a fan club sticker.