function setup() {

  createCanvas(windowWidth,

               windowHeight);

  background(150, 150, 1);

}



function draw() {

  var from = color(578, 123, 65, 90);

  var to = color(546, 258, 160, 90);



  stroke(255, 170);

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

  rect(random(width), random(height), 138, 95);

}