in my opinion, if the sun turned green the whole world would be a light green color which wouldn’t be that great. if the sun turned red, then all of us (or definitely me),would feel quite sick because red is the color of blood and when you see someone bleeding and getting taken to hospital, you would feel quite sick, wouldn’t you? well, I would. i expect if your friends said “what would happen if the sun turned green?”, you would know the answer.
aliza