Super saturated double rainbow

Walking home from work tonight, the light was doing mad things. I think it was something to do with it being heavily overcast above us but clear to the west to let the setting sun bounce through.

A light rain shower started and then brightest double rainbow appeared directly in front of me. Quickly grabbed the camera, swapped the 50mm for the wide angle and fired off a couple of frames as the rain started to get heavier.

A few seconds later, the rain had stopped and the rainbow was all but gone.