The title of this article is a conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
The Television Bart couch gag is the sixth couch gag of Season 8.
The family sits down, but now Bart is green. Homer fiddles with the TV antenna and Bart changes to red. Homer then returns to the couch, and smacks Bart in the back of the head in order to return him to his normal color (yellow).