Hello, I took this picture of a rainbow over my grandparent's house and am trying to get the rainbow to be more vibrant and show up better. Not really sure what the best way to go about it is since just adjusting simple things like the vibrancy levels and such doesn't do much since it is so feint. Any help in making the rainbow stand out more in a natural looking way would be much appreciated.
http://i.imgur.com/UuoaWEZ.jpg
http://i.imgur.com/UuoaWEZ.jpg