This is a cool project! Also a really interesting and low key creepy experiment. Maybe have Philip Zimbardo dressed in a stereotypical scientist outfit (white coat, glasses, crazy hair, the whole shebang) and then just design some angry looking guards and some sad prisoners. If you need names, maybe research other people involved in the experiment? Hope this helped
Yes, yellow-orange is an example of an intermediate color because an intermediate colors are made by mixing equal amounts of primary and a secondary color. Hope that helps!