Use color, not happy, we can choose bright color to make myself cheer, nervous, we can choose calmcolour calm us down, can choose to wear in the summer the cool color of light blue and white, it will feel a little bit cool, in the winter, we can choose warm color to make themselves feel warm, orange represents happy, all that can be painted orange, the home we feel happy at home.
The world would be dark, because there is no color!
