Why the color of the ceiling should be light rather than heavy

Why should the color of the ceiling be light rather than heavy

In ancient times, the beginning of heaven and earth was just a chaos, and then it was divided into two qi, the light of the qi rose up and became the sky, and the heavy qi sank and became the earth, so there is a distinction between heaven and earth. The ceiling of the living room symbolizes the sky, and the color is of course mainly light and light. For example, light blue symbolizes a bright blue sky, while white symbolizes white clouds. The color of the ceiling should be light, and the color of the floor should be dark, in order to conform to the importance of heaven and earth. Therefore, the smallpox color should be light rather than heavy.