This document contains two lists of colors - the first is the order of colors in the visible light spectrum from Wikipedia, while the second lists the colors referenced in the song "Barney's Song". Both lists include the colors red, yellow, green, blue and orange.

2. WIKIPEDIA BARNEY’S SONG
 Red  Red
 Orange  Yellow
 Yellow  Pink
 Green  Green
 Blue  Purple
 Indigo  Orange
 Violet  Blue