It communicates emotion, creates mood, and affects your energy. Color has an emotional impact that can delight you or distress you.
Colors evoke both pleasant and unpleasant emotions.
Your reaction to a particular color will be influenced by your personal experiences. Certain colors will remind you of certain people and events. You may associate colors with certain scents. Vivid colors stimulate people to activity. Color has been known to increase productivity in industry, to speed recovery time in hospitals, to cause you to overeat.