True Moonbows
A true moonbow is lit by the Moon itself, not directly by the Sun. In contrast, a colored rainbow (or a white fogbow) seen when the sun is rising or setting, or in twilight, is not a moonbow because it is still produced by sunlight.
Moonbows have been mentioned at least since Aristotle's Meteorology (circa 350 BC), and also in an 1847 publication.
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“It is a matter of perfect indifference where a thing originated; the only question is: “Is it true in and for itself?””
—Georg Wilhelm Friedrich Hegel (1770–1831)