I was in charge in this stage. It took me an hour to think about the color representation and I think this set of the mood board is the great one!
At the train station, the color is mainly green and blue, making the scene look sad, produce a dark attitude. The color of the clothes also represent different characteristics. The main character - who has an anxiety problem, will wear the dark red shirt - represent the sickness, worrying and pressure that he/she have to suffer in the crowd while "the good friend" will represent a opposite color which is green, make he/she look more friendly with strong confidence.