iris
irisation
nacreousness
opalescence
prismaticness
rainbow
reflet
sunbow
versicolor
brightness
after-image
blur
chiton
discoloration
gemstone
glaze
haze
hazes
highlight
ichor
luminescence
luminosity
luster
mistiness
paleness
phosphorescence
plumage
radiance
sheen
shimmer
streamer
tinge
tint