div.colors{background:gray;background:saturate(red);background:cyan;background:1;color:#666;color:saturate(#369);color:#1f66ad;color:#c96;color:1}div.numbers{filter:grayscale(30%);filter:saturate(30%);filter:invert(30%);-webkit-filter:grayscale(0.3);-webkit-filter:saturate(0.3);-webkit-filter:invert(0.3)}