function setup() {

  createCanvas(windowWidth,

               windowHeight);

  background(125, 125, 125);

}



function draw() {

  var from = color(16, 200, 175, 40);

  var to = color(182, 222, 111, 40);



  stroke(255, 170);

  fill(lerpColor(from, to, random(1.0)));

  rect(random(width), random(height), 45, 45);

}