The document discusses how color, specifically red, can psychologically influence people. It notes that red enhances appetite and is often used in fast food packaging for this reason. Red is also found to make men view women as more attractive. The document also discusses theories of inattentional blindness from a demonstration where many people failed to notice a gorilla passing by as they focused on counting passes in a game. In summary, the document examines how color, especially red, can subtly influence perceptions and behaviors.