Throughout the novel, different characters notice Sula’s birthmark as positive or negative things, based on their encounters with her.  In Rod Sterling’s “The Twilight Zone”, the episode ” The eye of the beholder” displays a society of pig looking animals who find a human looking person hideous.  Based on the norms of the society, they believe she is ugly because she is different looking.  This parallels to how people judge Sula based on her outrageous appearance in society.