@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

/* === to hide === 
.tab-icon-image[src="http://myfav.es/favicon.ico"] { display:none!important; } */

*[src*="myfav.es"] {
background: url("data:image/vnd.microsoft.icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAARnQU1BAACx jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAZdEVYdFNvZnR3YXJlAFBhaW50Lk5FVCB2My41 LjVJivzgAAAAkElEQVQ4T92R3QmAMAyEM1s3cA9B6Cyu4Q6lDha91IRWSyiCLxZCA+3l5zui/xym OXDcWO4SkmPDnHOIOzNuBK0lb7a/xBBZJJoYnyCGqIklyZudqqsUgLie4C5+TIBKWqQWawcdnc7O XbF+VAY9d43BJ9Z7pIdc8EgPuWCQ1K4KlvfW4PBID7vgkf7WhbfWHq+b6w1fbCvUAAAAAElFTkSu QmCC") no-repeat !important;
padding-left: 16px !important;
width: 0 !important; }