iridescent has definitions from the field of color
1
[ adjective ] varying in color when seen in different lights or from different angles

Examples

"changeable taffeta" "chatoyant (or shot) silk" "a dragonfly hovered, vibrating and iridescent"

Related terms

colorful

2
[ adjective ] (color) having a play of lustrous rainbow-like colors

Examples

"an iridescent oil slick" "nacreous (or pearlescent) clouds looking like mother-of-pearl" "a milky opalescent (or opaline) luster"

Related terms

bright

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