Key to Chroma — Piers Anthony

Key to Chroma The Second Novel in the Epic ChroMagic Fantasy Series Settled by a human expedition over 1,000 years ago, the planet Charm is both magical and dangerous. Volcanoes, scattered throughout the vast landscape, erupt with a fantastic array of colors creating Chroma zones and permeating everything and everyone with magic. The barbarian Havoc became king of this strange land and immediately found himself a target to unknown powerful assassins. Having finally secured a firm grip on governing the planet with the help of the God-like Glamors, Havoc and his companions must now set off in search of seven mysterious ikons to attempt to learn the secret of the Changelings . a secret that could answer all of Havoc's questions, or lead him to his doom.