submission by jtoy
function setup(){
  var myCanvas = createCanvas(windowWidth,windowHeight); //you must keep this line unmodified
  t = 0
tt = 0
}

function draw() {
  background(0,5)
  noStroke()

  for(i= 0;i<1000;i++){
    fill(0,100,noise(t+i)*255)
    x=noise(t+i)*width
    y=noise((t+i+1))*width
    ellipse(x,y,10,10)
   size= noise(tt*i)*30
   fill(noise(tt+i)*255,0,100)
    ellipse(y,x,size,size)
  }
  t += 0.001
  tt += 0.0001
}