Answer:
I am black within and red without; with four corners round about. What am I?
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I mirror your actions.
What kind of room has no doors or windows?
I have a lot to say but can't be heard because I can't speak one single word. What am I?
I'm the source of all emotion but I'm caged in a white prison.