robot = new Robot(GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice());
System.out.println(robot.getPixelColor(
    (int) MouseInfo.getPointerInfo().getLocation().getX() + 10,
    (int) MouseInfo.getPointerInfo().getLocation().getY() + 10
));

java.awt.Color[r=0,g=0,b=0]