With a little magic and code, we have a pointer that runs with the mouse cursor inside a square. Up and down - and the color changes. Left and right - and the brightness changes. Also, a cute mBot monitors the movement of the pointer. Because I work with a Russian-speaking audience, all the inscriptions on the stage are in Russian. By pressing the spacebar we copy the selected color. If the application does not work after clicking on the green flag, expand it to full screen.