These photographs were taken yesterday by twitter user @bakatetu2, and user @kaorin1121's husband. Taken from the Jujo station in Kyoto, Japan, these photos show a rainbow - albeit a faint one - over the Nintendo headquarters located there.
Believe what you will, but to me, this signifies Mr. Iwata's race to the afterlife on the back of Rainbow Road, a map that I'm sure he of all people never struggled to compete on. Conversely, you can believe that this rainbow was created as a by-product of the tears shed by millions of fans worldwide.
Either way, it shows that Iwata is gone off to somewhere better than here, and he left one last happy sign before he left.