What is the backwords rainbow reflected off of a rainbow?

Question

Sometimes when I look up in the sky at a rainbow I see another rainbow that is backwards. Instead of going R,O,Y,G,B,P it goes P,B,G,Y,O,R. Is this a reflection? Also, are rainbows actually a full circle but we can only see half of it because of the horizon?

Answer 1

Way too deep man.