The Interaction of Color adapts Josef Albers famous 1963 book for the ipad. A seminal work, bulky and unmanageable in its original, now married 50 years on to cutting edge technology. A perfect unison. If, like me, you’ve ever felt frustrated at your inability to use colour truly creatively then this app will inspire and help. A stunningly clever piece of interactive work by New York based Potion design.