There are different faces of a man, different faces which shows itself depending on the situation, circumstances and time..The colors represents:
White: Represents Love, Peace.
Yellow: Happiness, Creativity, Joy.
Red: Anger, Hatred, Jealousy
Blue: Sadness, Calmness, Solitude
Black: Death.

Its just that how a man controls these emotions inside himself because a man is doomed if he uses any one of them in an excessive manner. So a mix n balance of these 'colors' maketh a man who is normal, lively and ever energetic to go n live that life. :)