How does August Wilson use imagery in The Piano Lesson?

The imagery is reflected in the setting. The action takes place in the kitchen and parlor of the house where Doaker Charles, his niece, Berniece, and her eleven-year old daughter, Maretha, live. Boy Willie, Berniece's brother, has just arrived from down South with his friend Lymon. The two men have stolen a truck and have hauled a load of watermelons in it. They plan to sell the melons and split the profits evenly. Lymon is in trouble with the sheriff back home and announces that he plans to stay in Pittsburgh, but Boy Willie insists that he will return South.