function setup() {

  createCanvas(windowWidth,

               windowHeight);

  background(345,345,345);

}



function draw() {

  var from = color(0, 100, 125, 30);

  var to = color(355, 200, 250, 50);



  stroke(155, 70);

  fill(lerpColor(from, to, random(2.0)));

  rect(random(width), random(height), 100, 100);

}