More from KUOW Arts & Life Why, In Fact, Is Grass Green And The Sky Blue? KUOW | By Marcie Sillman Published October 28, 2013 at 3:31 PM AKDT Twitter LinkedIn Email Listen • 6:43 KUOW Photo/Marcie Sillman Authors Joann and Arielle Eckstut at the KUOW studios. Marcie Sillman speaks with authors Joann and Arielle Eckstut about their book "The Secret Language of Color," which explores the answers to colorful questions.