colorMode(HSB)

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

  noStroke()

}

​

function draw() {

  colorMode(HSB)

  for (let i = 0; i < width; i += 50) {

    let h = map(i, 0, width, 0, 360)

    for (let o = 0; o < height; o += 50) {

      let r = random(-50, 50)

      let r2 = random(0, 30)

      let r3 = random(0, 60)

      let clr = color((r+h + o + frameCount * 5) / 2 % 360, mouseY / 5, mouseX / 5)

      clr.setAlpha(0.5)

      fill(clr)

      // ellipse(i, o, 10)

      // rect(i, o, 30, 50)

      rect(i, o, 10,10)

    }

  }

  // fill(mouseX % 360, 100, 100)

  // ellipse(mouseX, mouseY, 100, 100);

}