http://www.newsweek.com/pink-moon-astronomy-name-why-1586649

Disappointed stargazers have taken to social media to complain that Monday night's pink moon was not actually pink.

Their confusion is understandable, but the term does not refer to the moon's color. The April full moon gets its name from the wildflowers of the moss pink, also called creeping phlox, which is one of the earliest flowering plants of spring in the eastern U.S.