processing.org code for the cover of http://8tracks.com/danielrt/36

36.pde

int i, j, k; // loops
int pos[]= new int[2]; // last point of curve
color c[]={ // https://kuler.adobe.com/Delacroix-color-theme-3382641/
  color(26, 56, 56),
  color(63, 122, 81),
  color(130, 163, 82),
  color(209, 192, 98),
  color(254, 190, 88),
};
PGraphics n36; // raster "36."
int gray; // color of current pixel
PFont fnt=createFont("HelveticaNeue-Bold", 54);

void setup() {
  size(1440, 1440);
  background(255);
  
  n36=createGraphics(90, 90); // raster "36."
  n36.beginDraw();
  n36.background(0);
  n36.fill(255);
  n36.textFont(fnt);
  n36.textAlign(CENTER, TOP);
  n36.text("36.", 45, 26);
  n36.endDraw();
  
  strokeWeight(6);
  noFill();
  for (i=0; i<90; i++) {
    for (j=0; j<90; j++) {
      gray=round(red(n36.pixels[i+j*n36.width])/6);
      stroke(c[(floor(random(4)))], 192);
      pos[0]=i*16;
      pos[1]=j*16;
      beginShape();
      curveVertex(pos[0], pos[1]);
      for (k=0; k<gray+6; k++) {
        pos[0]+=round(random(16))-8;
        pos[1]+=round(random(16))-8;
        curveVertex(pos[0], pos[1]);
      }
      endShape();
    }
  }
  
  // uncomment the next line to save
  // save("portada_36.png");
}