Irisate

I have never been able, any more than Sir D. Brewster and other observers, to detect the variegated or irisate colours mentioned by Newton, neither on myself nor in the numerous cases where I have applied compression.

Source: wiktionary

One might travel far without ever having ever an opportunity again to see such a confusion of mists, winds, sunshine, moonlight and showers, and irisate colour effects as in Melville Dewey's confuse and effeminate pictures.

Source: wiktionary

In place of the grey clouds, which passed and passed again, darkening thoughts and things alike, is an immense void, profound and clear, which this evening is of an irisate blue, of a blue turning, on the horizon, to the green of aqua-marina.

Source: wiktionary