In feng shui, what color carpet should be laid outside the door of the home?

In geomantic omen, you can choose the color of the carpet outside the front door according to the five elements, such as facing south and "fire" in the south, so that the fire can produce "earth" and the door can use "yellow" carpet. The east is "wood", so wood can make "fire" You can use the "red" carpet at the door. The north is "water", let the water grow into "wood", and you can use a "turquoise" carpet at the door. The west is "gold", so that gold can produce "water", and a "dark gray" carpet can be used at the door.