When either a left, right, up, or down button is pressed the circle that initially starts in the center of the console moves, and the circle changes color when each button is pressed. When the up button is pressed when the circle is traveling up the circle moves quicker; when the circle is traveling, but you press the down button the circle startsslowing down.
This shows that when the when either a left, right, up, or down button is pressed the circle does not change colors anymore, but what does change is the color of the background of the controller and the buttons. When the circle hits any wall, but the top one, the color of the background and buttons change to gray. When either the buttons are pressed or the circle hits the ceiling of the console the colors of the background and buttons change.
This screenshot is showing that when the circle touches a wall or a button is pressed by the user the color of the background and buttons change.