let x0 = 100; let y0 = 100;

let size = 50;

let spacing = 50;

​

let colors = []; 

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  // for (let i=0; i<cols; i++){

  //   for (let j=0; j<rows; j++){

  //     ellipse(x0+i*spacing, y0+j*spacing, colors[i][j], colors[i][j]);

  //   }

  // }

}