createCanvas(600, 600);

  colorMode(HSB,360,100,100);

  noLoop();

} 

​

function draw() { 

  background(0,0,100);

for (let i = 0; i < 10; i = i + 1) {

  let x = 50 + i * 50;

  let y = 300;

  let h = i * 20;

  let s = random(20,80);

  fill(h,s,100);

  rect (x,y,40,40);

}

}