public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Integer pieces = 9 - this.player.getPiecesPlayed();
        for (int r=0; r<pieces; r++) {
            for (int c=0; c<COLS; c++) {
                int x = c * CELL_SIZE;
                int y = r * CELL_SIZE + 30;
//            	g.setColor(Color.WHITE);
//            	g.fillRect(x, y, CELL_SIZE, CELL_SIZE);
            	g.setColor(this.player.getColor());
            	g.fillOval(x+10, y+10, CELL_SIZE-20, CELL_SIZE-20);
            }
        }
	}