Processing.org code for the cover of http://8tracks.com/danielrt/40

40.pde

int i, j, gray;
PGraphics n40; // raster "40."
PFont fnt=createFont("HelveticaNeueLTStd-Bd", 54);
color[] c={
  color(234, 38, 92), // red
  color(5, 130, 204), // blue
  color(144, 204, 0), // green
  color(254, 183, 0) // orange
};

void setup() {
  size(1440, 1440);
  background(255);
  noStroke();
  n40=createGraphics(90, 90); // raster "38."
  n40.beginDraw();
  n40.background(0);
  n40.fill(255);
  n40.textFont(fnt);
  n40.textAlign(CENTER, TOP);
  n40.text("40.", 45, 40);
  n40.endDraw();
  for (i=0; i<90; i++) {
    for (j=0; j<90; j++) {
      gray=round(red(n40.pixels[i+j*n40.width])/32);
      fill(c[round(random(c.length-1))], round(random(192))+63);
      quad(
        i*16+(j%2),
        j*16-16+gray,
        i*16-16+gray,
        j*16,
        i*16,
        j*16+16-gray,
        i*16+16-gray,
        j*16
      );
    }
  }
  save("40.png");
}