void  setup () {
 size( 600,600); // w,h My dogs name is Crusty
 background(124,14,155); // 0 is black vales 0 and 255 Col is RGB

}

void draw () {
  rect ( 100,200,200,200); // xpos, ypos, w,h,
  println(mouseX, mouseY);
}

void keyPressed() {
  if ( key == 's') {
   saveFrame("mypic-####.jpg");
  }
}