some updates

app/assets/javascripts/orbitdesktopAPI.js

@@ -55,5 +55,12 @@ var orbitDesktopAPI = function(){
 	       var A = key(a), B = key(b);
 	       return ((A < B) ? -1 : (A > B) ? +1 : 0) * [-1,1][+!!reverse];                  
 	   }
-	}
+	};
+	this.rgb2hex = function(rgb) {
+	    rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
+	    var hex = function(x) {
+	        return ("0" + parseInt(x).toString(16)).slice(-2);
+	    }
+	    return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
+	};
 };