For feng shui, can't the footstone be white?

According to feng shui, white crural lines are not used. Because red and purplish red are the colors of the solemn boundary between yin and yang. It can suppress some evil spirits underground. If you don't think the color looks good, you can cover it with bright plywood. You can also leave the lid on. After all, the footstone is not a short part that people pay attention to. As long as you don't care too much, it makes no difference.