Normalizing strokeStyle and shadowColor

lib/canvas.js

@@ -293,11 +293,7 @@ Context2d.prototype.__defineSetter__('strokeStyle', function(val){
  * @api public
  */
 
-Context2d.prototype.__defineGetter__('strokeStyle', function(){
-  var rgba = this.lastStrokeStyle;
-  return 'rgba(' + rgba[0] + ',' + rgba[1] + ',' + rgba[2] + ',' + rgba[3] + ')';
-});
-
+Context2d.prototype.__defineGetter__('strokeStyle', normalizedColor('lastStrokeStyle'));
 /**
  * Set the shadow color with the given css color string.
  *
@@ -325,7 +321,4 @@ Context2d.prototype.__defineSetter__('shadowColor', function(val){
  * @api public
  */
 
-Context2d.prototype.__defineGetter__('shadowColor', function(){
-  var rgba = this.lastShadowColor;
-  return 'rgba(' + rgba[0] + ',' + rgba[1] + ',' + rgba[2] + ',' + rgba[3] + ')';
-});
+Context2d.prototype.__defineGetter__('shadowColor', normalizedColor('lastShadowColor'));