dribbble-checkers.css

/* add this... */

ol.dribbbles li div.dribbble-img, div.the-shot div.single-grid {
  background: url(http://i.imgur.com/31Ca2d2.png);
}

@media only screen and (min-device-pixel-ratio: 2),
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and (min--moz-device-pixel-ratio: 2),
only screen and (-o-min-device-pixel-ratio: ~"2/1") {
	ol.dribbbles li div.dribbble-img, div.the-shot div.single-grid {
		background: url(http://i.imgur.com/BeuHNKk.png);
		background-size: 20px;
	}
}

/* remove this: */

ol.dribbbles li div.dribbble div.dribbble-shot {
	background: url(/images/dribbble-check-sm.png) no-repeat top left;
}