WordNet sense 1 (varying in color when seen in different lights or from different angles):

changeable, chatoyant, shot

WordNet sense 2 (having striking color):

colorful, colourful

WordNet sense 3 (having a play of lustrous rainbow-like colors):

nacreous, opalescent, pearlescent, opaline

WordNet sense 4 (emitting or reflecting light readily or in large amounts):

bright