Rainbow flies are flies of world of deities. They live in nests like wasps and have queens. One of they including their queens can talk. Female rainbow flies lay eggs on fur of animals gods and goddesses (if they have fur) and on clothes of humans gods and goddesses. As creatures of world of gods and goddeses they can't harm someone and they can be easily tamed by gods and goddesses and possibly mortals. They can be docile to owners too if they domesticated.

"little swarm of rainbows flies flies near you"