​

function preload()

{

  clown = loadImage ("clown.jpg");

}

​

function setup() {

  createCanvas(500, 500);

}

​

function draw() {

  background(220);

  image(clown, 0, 0);

 // Get a random position in the image

  let x = floor(random(clown.width));

  let y = floor(random(clown.height));

​

  // Set that pixel to black

  let myColor = color('rgb(255,237,0)');

  clown.loadPixels();

  clown.set(x, y, myColor);

  clown.updatePixels();

​

  image(clown, 0, 0);

}