彩雲? Iridescent cloud?

Mo pushing Naoya on a bicycle, Masaki to follow

Iridescent cloud? A kid at kindergarten pointed to the sky, and said there was a strange cloud. Maybe it was a sign of good luck...?
幼稚園のお友達が、空に変わった雲があると指差すと、そこには彩雲が。何か良いことあるかな。