Luke Skywalker is doing his laundry (and using Clorox bleach on his white outfit that always gets dirty when he’s fighting the Empire and stuff) when Darth Vader approaches him and tries to lure him to the dark side, saying: “If you only knew the power of the dark side!” So Luke Skywalker turns to Darth Vader, bottle of Clorox in hand, and says: “If you only knew the power of the light side!” And he pours Clorox on Darth Vader, turning his outfit from all black to all white. Then, being all glowing bright white, Darth Vader turns his back on the dark side and teams up with Luke Skywalker to defeat the Empire.
Next, in a prequel ad, we see a younger Darth Vader, and he’s wearing a light-colored outfit, but he keeps spilling things on it, and everywhere he goes, he keeps getting his outfit dirty, but whenever he tries to wash his clothes, they come out all dingy, with remnants of the old stains still in them. And the anger and frustration over this turns Darth Vader to the dark side, and he decides to wear an all black outfit, because it does not show dirt or stains as much. Then the announcer says: “If only he’d known about Clorox Bleach and Clorox 2! Then he would have been a force for good throughout the galaxy!”