On this episode of Design Matters, Debbie Millman talks to Brenda Danilowitz, Chief Curator at the Josef and Anni Albers Foundation, and Philip Tiongson, a principal at Potion, a design and technology firm specialzing in interactive expereinces, about Josef Alber's book Interaction of Color. To mark the 50th anniversary of this groundbreaking book, Yale University is realeasing an of the book.The Interaction of Color mobile app for iPad helps the user understand the book's ideas, view the plates, experiment, and create and share designs. This interactive edition of one of the most influential books on color ever written offers users an entirely new way to experience Josef Albers's original masterwork.