createCanvas(300, 300);

  background(240);

}

​

function draw() {

  if (mouseIsPressed) {

    let rot = random(255);

    let gruen = random(255);

    let blau = random(255);

​

    fill(rot, gruen, blau);

​

    ellipse(mouseX, mouseY, 10);

  }

}

​

function keyPressed() {

  background(240);

}