Every time you see a rainbow

With Thing One sitting on the big potty and company waiting in the living room,
Me: Are you done?
Thing One (slowly singing, while possibly also composing): People love rainbows all the time. On this rainbow, they're just black and brown and dark and light. Yes, I am. Yes, I am. Every time you're watching, every time you look, then there's always a rainbow. Every time you stop then you'll see a rainbow. Every time you hear a sound, you'll know it's someone looking at the rainbow.