Colours play a big role in everyday psychology. Believe it or not, the picture shown here(which was taken by me) was originally yellow in colour. But to make it more dangerous I tweaked some graphs and made it red. Now, the whole vibe has changed. It has bwen scientifically proven that colours play a large role with how a person perceives things.

Next time, do pay attention to the colours in a movie!

Maybe they'll tell you a more deeper meaning.