Once scorned and exiled by his fellow stuffed animals, Jimmy learned the art of levitation from a wandering gypsy and began gathering as many type-7 rainbow clouds as he could manage. Harnessing the ultimate power of the rainbow ether, he plans to build a superlaser capable of wiping out a small city with a concentrated blast of sparkley-happiness.
This stems from an actual conversation in which the tagline above was exclaimed thanks to the fact that someone had seen a rainbow there recently.
And they have cows.
Which would of course add to the magical aura of any city, be it bursting with refracted sunlight or not.