​

let xOffset = 50;

let xSpacing = 50;

​

let yOffset = 50;

let ySpacing = 50;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  noLoop();

}

​

function draw() {

  background(220, 0, 150);

​

  for (let xPos = xOffset; xPos <= width - xOffset; xPos += xSpacing) {

    for (let yPos = yOffset; yPos <= height - yOffset; yPos += ySpacing) {

      fill(xPos, 0, yPos);

      ellipse(xPos, yPos, cDiam);

    }

  }

}

​