What metaphors are used in Reading Lolita in Tehran, A Memoir in Books by Azar Nafisi?

Metaphor:

"This class was the color of my dreams."

"The jailer invites Cincinnatus to a dance. They begin a waltz and move out into the hall... Dancing with your jailer, participating in your own execution, that is an act of utmost brutality. My students witnessed it in show trials on television and enacted it every time they went out into the streets dressed as they were told to dressed."