createCanvas(600, 400);

    background(237, 34, 93);

}

​

function draw() {

​

}

​

function keyPressed() {

    if (keyCode === ENTER)

    background(237, 34, 93);

}

​

function mouseDragged() {

    paint();

}

​

function paint() {

    noStroke();

    fill(250, 200, 200, 50);

    ellipse(mouseX, mouseY, 25, 25);

}