Answer:
I go into the water black and come out red. What am I?
I am milky white and scares people.
Light hides me and darkness kills me. What am I?
I wear a red robe, with staff in hand and a stone in my throat. What am I?
When it comes to me, you go on red and stops on green. What am I?
I flow from the Homerβs mouth when he sees doughnuts.