oddone

int cols=12, rows=8;
int sz = 80;
PImage img1, img2;

void setup() {
  img1=loadImage("http://emoji.ink/assets/160x160/416.png");
  img2=img1.get();
  img2.filter(GRAY);
  size(sz*cols, sz*rows);
  createGrid();
}

void draw() {
}

void mouseReleased() {
  createGrid();
}

void keyPressed() {
  save(random(344)+".jpg");
}

void createGrid() {
  background(20);
  for (int i=0; i<cols; i++) {
    for (int j=0; j<rows; j++) {
      if (random(1)>.99) {
        image(img2, i*sz, j*sz, sz, sz);
      } else {
        image(img1, i*sz, j*sz, sz, sz);
      }
    }
  }
}