What are facts about iris the goddess of rainbow?

1) She uses a rainbow as bridge between the heavens and Earth

2) Zephyrus, the god of the warm west wind, was her boyfriend.

3) Zephyrus and Iris had a son named Pothos.

4) Zeus sends her to the River Styx whenever the Gods need to swear an oath.

5) Her sister, the Harpies, were about to dies for tormenting Phineus, but she saved them.

6) Iris is Hera's special messenger.

7) When she delivers messages to mortals, she assumes the form of someone they know.