|Double Rainbow over Taconic Lake|
This double rainbow didn't photograph as well as I had hoped, but it was cool.
Nature's natural color spectrum always elicits the same pattern (red, orange, yellow, green, blue, indigo, violet) when light is refracted, commonly known from the Roy G. Biv mnemonic.
While a primary rainbow is visible when light is reflected once off the back of a raindrop, a secondary and usually dimmer rainbow is spotted when light is reflected twice in a more complicated pattern.
The colors of the second rainbow are inverted, with blue on the outside and red moved to the inside. The second bow appears dimmer or cloudier because much more light is released from two reflections, and both bows cover a larger portion of the sky.
It is rare and unlikely, but three or even four rainbows can be seen on occasion, but only if they are reflected off of the earthly objects.