The houses are haunted (1)
Ghosts appear out of nowhere, and if a ghost popped up, you would certainly be surprised to say the least. In fact, you might have to spend a lot of time thinking about if what you saw was real or just your imagination playing a trick on you.
By white night-gowns. (2)
So it turns out your imagination in that first line? It totally was playing a trick on you. We're not talking ghosts at all. What things look like—how they seem—isn't always what they are.
None are greenOr purple with green rings,Or green with yellow rings,Or yellow with blue rings. (3-6)
The color schemes stir our imagination and make us understand how exciting the world can be. These color schemes also make us consider the strangeness of our normal color schemes and normal ways of living. Who's to say what's normal, anyway? Isn't it all relative?