 Despite the fact that the entire film is in black and white, several  viewers vividly (and specifically) recall the "red" blood as it  swirled down the shower drain. Obviously, this could not be true,  not just for the fact of the black and white film, but the blood was  actually Bosco chocolate syrup. Although feature films were produced  in color at the time, newsreels were shown in black and white.  Filming the movie in black and white might have made it seem less  gory (see other trivia), but it also might have seemed more real to  viewers at the time who were used to seeing the news in black and  white.