What is the author's style in Topdog/Underdog by Suzan-Lori Parks?

Parks often uses humor to underscore the tragedy of a particular situation as it offsets the dire circumstances the play's protagonists live in. Moreover, humor serves to leaven the pathos of the situation, particularly when one of the protagonists appears to struggle against a sense of inertia that has plagued him throughout his life. For example, Booth's attempts to win Grace's heart after their two-year separation is placed in a comical light when he tells Lincoln that he has boosted a "diamond-esque" ring that is slightly too small for her.