What color is the floor mat in front of the door?

Green in the east, red in the south, black in the north and yellow in the west. The door is open in the east. Is it green or red? The door opens to the north, gold or black, with wavy lines. The door opens to the west, yellow or gray and brown. The door faces south, and the red and green sails. The ladder below is yellow and the ladder above is red. If we want to discuss it in detail, we need to combine the door divination, the main divination and the Taoist divination. Shaped mountains.