iridescent in WordNet English dictionary

1. varying in color when seen in different lights or from different angles
   "changeable taffeta"; "chatoyant (or shot) silk"; "a dragonfly hovered, vibrating and iridescent"
   changeable  chatoyant  iridescent  shot 
   
2. having a play of lustrous rainbow colors
   "an iridescent oil slick"; "nacreous (or pearlescent) clouds looking like mother-of-pearl"; "a milky opalescent (or opaline) luster"
   iridescent  nacreous  opalescent  opaline  pearlescent