Colour : dyes, pigments, and metals -- Ultramarine : from over the seas -- Vermilion : towards the philosophers' stone -- Metallic blues : the powers of the planets -- Dragonsblood : the fruit of mortal combat -- Gold : the riches of the unknown -- Colour : the other side -- Vermilion : the sublime, crystallised -- Gold : the love that conquers death -- The science of colour : epilogue.