How does the author use language in the graphic novel, Wilson?

There is a good deal of bad language in this novel. Wilson and the other characters curse often. Of course, the cursing is to be expected because Wilson is such an outspoken person. He speaks his mind even if it is offensive to others. Language, of course, is limited to conversations between characters or a single character talking to himself. The balloons in which this language is contained are significant because of their color. For instance, when the balloons are pink instead of white, it means that Wilson is talking in his falsetto voice, the one he uses when he speaks as Pepper.