achroma achromasia achromatosis albescence albinism albino albinoism blondness burelage canescence chalkiness creaminess fairness frostiness glaucescence glaucousness grizzliness hoariness iridescence iridization irisation lactescence leukoderma light show lightness milkiness moire pattern mother-of-pearl mother-of-pearl cloud nacre nacreousness opalescence paleness play of colors play of light rainbow silver silveriness snowiness vitiligo white white race whiteness whitishness