Happy Mother Nature!!!!
When pollution is washed out from atmosphere we get to see these kind of double triple rainbows. There is a reason for that. Read here
http://en.wikipedia.org/wiki/Atmospheric_optics
http://education.nationalgeographic.com/education/encyclopedia/rainbow/?ar_a=1
http://weather.ou.edu/~spark/AMON/v3_n2/Editorials/rainbow.html