Hey Bros So I just have a quick question, if you have seen PewDiePie's videos, in some of them (How To Be A Salad, Surgeon Simulator, Cat Mario), you can clearly see that he is sitting on the chair and behind him, is either the kitchen, living room, or a wall. In the videos, he does a "PewDiePie Techno Rage" where behind him is a Disco and he is dancing, so how does he turn the background to a Disco if the lighting isn't good and his shadow is on the wall? Like in Photobooth or iMovie you can on…