function setup() {

  createCanvas(windowWidth,

               windowHeight);

  background(300, 300, 300);

}



function draw() {

  var from = color(64, 64, 64, 3);

var to = color(128, 128, 128, 300);

  var to = color(64, 64, 64, 260);

	var from = color(64, 64, 64, 3);



  stroke(300, 100);

  fill(lerpColor(from, to, random(0.8)));

  rect(random(width), random(height), 40, 40);

　rect(random(width), random(height), 60, 60);

}