Why does the color appropriate of the ceiling light shoulds not be heavy

In ancient times, the birth of the heavens and the earth is just a piece of chaos, then split into two gas, gas light person up for days, sink and heavy cloud of gas and earth, so there is heaven and earth.Living room ceiling is symbol of the day, of course, color is pale.Light blue symbol of lang lang, for example, the blue sky, the white symbol of baiyun leisurely.The color of the ceiling should be shallow, and the color of the floor will be deep, to comply with day light to heavy.Therefore, smallpox color appropriate light shoulds not be heavy.