Double Rainbow

Where I work, the retail floor is wide open to the outdoors and I get awesome views of weather phenomena and such. Last Saturday I got to see a double rainbow! It started as one, but became two and disappeared spontaneously. The second one is more faint, and can only be seen on the right as loosely defined color. What is peculiar is that the colors on the outside rainbow are reversed. They are not ROYGBIV, but VIBGYOR. YouTube and Google images further confirm this... See for yourself!