createCanvas(640, 480)

background(random(255), random(153), random(0))

}

​

function draw() {

if (mouseIsPressed) {

fill(random(255), random(255), random(255));

background(random(255), random(255), random(255))

} else {

fill(random(100), random(200), random(200));

}

ellipse(mouseX, mouseY, random(30), random(30));

}