Isn't Black in a Movie?

Hank: Why is it that when there's a black frame in a movie or t v show, my computer screen looks different than it's just turned off? Hank: It's cause the pixles don't emit light. The pixles change the color of the light as it passes through. John: Do you guys like raisins or hate them? You know what i think about raisins, john? Hank: I've always enjoyed raisins but very few people enjoy them as much as i do.