Phone Wallpaper - OpenProcessing

mySketch
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var x =0
var y = 0
var k = 0
function setup() {
  createCanvas(400, 400);
}
​
function draw() {
  background(255, 255, 200);
  for(var k = 0; k < 600; k += 70){
    stroke(85, 100, 70);
    strokeWeight(5)
    line(k, 0, k, 600);
    line(0, k, 600, k); 
    
  for (var x = 0; x < 450; x += 50){
    for (var y = 0; y < 450; y+=50){
    fill(255)
    circle(x,y,40);
    fill(255,0,0)
    circle(x,y,25);
  }
  }
}
}