anchor.diff:       {
           var img = new Image();
   img.crossOrigin = "anonymous";  // important - set crossOrigin before src!
  -img.src = "https://s3.amazonaws.com/bossbrims/110ft_blackpurple_frontangle_sticker";
  +img.src = "https://s3.amazonaws.com/bossbrims/kraken-1489347445902/6089mt_blackpurple_frontpage_sticker";
   img.onload = function(){
     canvas.setBackgroundImage(new fabric.Image(img, {
       originX: 'left',
  
positive.code:      {
          var img = new Image();
  img.crossOrigin = "anonymous";  // important - set crossOrigin before src!
  img.src = "https://s3.amazonaws.com/bossbrims/6089m_spruce_frontangle_nosticker";
  img.onload = function(){
    canvas.setBackgroundImage(new fabric.Image(img, {
      originX: 'left',
  
negative.code:      {
          var img = new Image();
  img.crossOrigin = "anonymous";  // important - set crossOrigin before src!
  img.src = "https://s3.amazonaws.com/bossbrims/kraken-1489189616709/6089m_maroon_frontangle_nosticker";
  img.onload = function(){
    canvas.setBackgroundImage(new fabric.Image(img, {
      originX: 'left',
  