diff --git a/jquery.sketchable.js b/jquery.sketchable.js
index c416581..e9bd1a3 100644
--- a/jquery.sketchable.js
+++ b/jquery.sketchable.js
@@ -17,7 +17,7 @@
  */
 ;(function($){
   // Custom namespace ID.
-  var _ns = "sketchable";
+  var _ns = 'sketchable';
   /**
    * jQuery sketchable plugin API.
    * @namespace methods
@@ -40,12 +40,12 @@
         if (!data) {
           // Attach event listeners.
           if (options.interactive) {
-            elem.bind("mousedown", mousedownHandler);
-            elem.bind("mousemove", mousemoveHandler);
-            elem.bind("mouseup", mouseupHandler);
-            elem.bind("touchstart", touchdownHandler);
-            elem.bind("touchmove", touchmoveHandler);
-            elem.bind("touchend", touchupHandler);
+            elem.bind('mousedown', mousedownHandler);
+            elem.bind('mousemove', mousemoveHandler);
+            elem.bind('mouseup', mouseupHandler);
+            elem.bind('touchstart', touchdownHandler);
+            elem.bind('touchmove', touchmoveHandler);
+            elem.bind('touchend', touchupHandler);
             // Fix Chrome "bug".
             this.onselectstart = function(){ return false };
           }
@@ -174,12 +174,12 @@
       return this.each(function(){
         var elem = $(this), data = elem.data(_ns) || {}, options = data.options;
         if (options.interactive) {
-          elem.unbind("mouseup", mouseupHandler);
-          elem.unbind("mousemove", mousemoveHandler);
-          elem.unbind("mousedown", mousedownHandler);
-          elem.unbind("touchstart", touchdownHandler);
-          elem.unbind("touchmove", touchmoveHandler);
-          elem.unbind("touchend", touchupHandler);
+          elem.unbind('mouseup', mouseupHandler);
+          elem.unbind('mousemove', mousemoveHandler);
+          elem.unbind('mousedown', mousedownHandler);
+          elem.unbind('touchstart', touchdownHandler);
+          elem.unbind('touchmove', touchmoveHandler);
+          elem.unbind('touchend', touchupHandler);
         }
         elem.removeData(_ns);
 
@@ -209,7 +209,7 @@
   $.fn.sketchable = function(method) {
     // These "magic" keywords return internal plugin methods,
     // so that they can be easily extended/overriden.
-    if ("methods functions hooks".split(" ").indexOf(method) > -1) {
+    if ('methods functions hooks'.split(' ').indexOf(method) > -1) {
       return methods;
     } else if (methods[method]) {
       return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
@@ -247,8 +247,8 @@
    *     lineWidth: 3,
    *     strokeStyle: '#F0F',
    *     fillStyle: '#F0F',
-   *     lineCap: "round",
-   *     lineJoin: "round",
+   *     lineCap: 'round',
+   *     lineJoin: 'round',
    *     miterLimit: 10
    *   }
    * });
@@ -279,8 +279,8 @@
       lineWidth: 3,
       strokeStyle: '#F0F',
       fillStyle: '#F0F',
-      lineCap: "round",
-      lineJoin: "round",
+      lineCap: 'round',
+      lineJoin: 'round',
       miterLimit: 10
     }
   };
@@ -292,7 +292,7 @@
     if (!options) options = elem.data(_ns).options;
     if (options.cssCursors) {
       // Visually indicate whether this element is interactive or not.
-      elem[0].style.cursor = options.interactive ? "pointer" : "not-allowed";
+      elem[0].style.cursor = options.interactive ? 'pointer' : 'not-allowed';
     }
   };
 
diff --git a/jquery.sketchable.memento.js b/jquery.sketchable.memento.js
index f3d203b..9e4392e 100644
--- a/jquery.sketchable.memento.js
+++ b/jquery.sketchable.memento.js
@@ -140,8 +140,8 @@
      * @memberOf MementoCanvas
      */
     this.init = function() {
-      $(document).off("keypress", keyManager);
-      $(document).on("keypress", keyManager);
+      $(document).off('keypress', keyManager);
+      $(document).on('keypress', keyManager);
     };
     /**
      * Destroy instance.
@@ -149,14 +149,14 @@
      * @memberOf MementoCanvas
      */
     this.destroy = function() {
-      $(document).off("keypress", keyManager);
+      $(document).off('keypress', keyManager);
       this.reset();
     };
 
   };
 
   // Bind plugin extension ////////////////////////////////////////////////////
-  var namespace    = "sketchable";
+  var namespace    = 'sketchable';
   var plugin       = $.fn.sketchable;
   var availMethods = plugin('methods');
 
@@ -200,7 +200,7 @@
 
     // Event order matters.
     // Init must go first, since it's called when instantiating the plugin.
-    var events = 'init mouseup clear destroy'.split(" ");
+    var events = 'init mouseup clear destroy'.split(' ');
     for (var i = 0; i < events.length; i++) {
       override(events[i]);
     }
diff --git a/jsketch.js b/jsketch.js
index cd7f555..e9334d9 100644
--- a/jsketch.js
+++ b/jsketch.js
@@ -1,5 +1,5 @@
 /*!
- * jSketch 0.8 | Luis A. Leiva | MIT license
+ * jSketch 0.9 | Luis A. Leiva | MIT license
  * A simple JavaScript library for drawing facilities on HTML5 canvas.
  */
 /**
@@ -8,8 +8,7 @@
  * such as function chainability and old-school AS3-like notation.
  * @name jSketch
  * @class
- * @version 0.8
- * @date 9 Jul 2014
+ * @version 0.9
  * @author Luis A. Leiva
  * @license MIT license
  * @example
@@ -21,17 +20,17 @@
  * // Switching between contexts removes the need of having to reinstantiate the jSketch class.
  * brush.context(canvas2).beginFill('#5F7').fillCircle(30,30,8).endFill();
  */
-;(function(window){
+;(function(window) {
     /**
      * @constructor
      * @param {Object} elem - MUST be a DOM element
      * @param {Object} options - Configuration
      */
-    var jSketch = function(elem, options){
+    var jSketch = function(elem, options) {
       return new Sketch(elem, options);
     };
     // Base class, private.
-    var Sketch = function(elem, options){
+    var Sketch = function(elem, options) {
       // Although discouraged, we can instantiate the class without arguments.
       if (!elem) return;
       // Set drawing context first.
@@ -60,10 +59,10 @@
        * @memberof jSketch
        */
       context: function(elem) {
-        if (elem === null) throw("No canvas element specified.");
+        if (elem === null) throw('No canvas element specified.');
         // Save shortcuts: canvas (DOM elem) & graphics (2D canvas context).
         this.canvas = elem;
-        this.graphics = elem.getContext("2d");
+        this.graphics = elem.getContext('2d');
         // Always allow chainability.
         return this;
       },
@@ -100,7 +99,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      size: function(width,height) {
+      size: function(width, height) {
         this.stageWidth  = width;
         this.stageHeight = height;
         this.canvas.width  = width;
@@ -117,7 +116,7 @@
        */
       background: function(color) {
         this.beginFill(color);
-        this.graphics.fillRect(0,0,this.stageWidth,this.stageHeight);
+        this.graphics.fillRect(0,0, this.stageWidth,this.stageHeight);
         this.endFill();
         return this;
       },
@@ -129,7 +128,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      stage: function(width,height,bgcolor) {
+      stage: function(width, height, bgcolor) {
         this.size(width,height).background(bgcolor);
         return this;
       },
@@ -163,7 +162,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      lineStyle: function(color,thickness,capStyle,joinStyle,miter) {
+      lineStyle: function(color, thickness, capStyle, joinStyle, miter) {
         var options = {
           strokeStyle: color     || this.graphics.strokeStyle,
           lineWidth:   thickness || this.graphics.lineWidth,
@@ -182,7 +181,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      moveTo: function(x,y) {
+      moveTo: function(x, y) {
         this.graphics.moveTo(x,y);
         return this;
       },
@@ -193,7 +192,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      lineTo: function(x,y) {
+      lineTo: function(x, y) {
         this.graphics.lineTo(x,y);
         return this;
       },
@@ -206,7 +205,7 @@
        * @return jSketch
        * @memberof jSketch
        */
-      line: function(x1,y1,x2,y2) {
+      line: function(x1,y1, x2,y2) {
         this.graphics.moveTo(x1,y1);
         this.lineTo(x2,y2);
         return this;
@@ -220,8 +219,8 @@
        * @return jSketch
        * @memberof jSketch
        */
-      curveTo: function(x,y,cpx,cpy) {
-        this.graphics.quadraticCurveTo(cpx,cpy,x,y);
+      curveTo: function(x,y, cpx,cpy) {
+        this.graphics.quadraticCurveTo(cpx,cpy, x,y);
         return this;
       },
       /**
@@ -235,9 +234,9 @@
        * @return jSketch
        * @memberof jSketch
        */
-      curve: function(x1,y1,x2,y2,cpx,cpy) {
+      curve: function(x1,y1, x2,y2, cpx,cpy) {
         this.graphics.moveTo(x1,y1);
-        this.curveTo(x2,y2,cpx,cpy);
+        this.curveTo(x2,y2, cpx,cpy);
         return this;
       },
       /**
@@ -258,9 +257,9 @@
        * @return jSketch
        * @memberof jSketch
        */
-      strokeRect: function(x,y,width,height) {
+      strokeRect: function(x,y, width,height) {
         this.graphics.beginPath();
-        this.graphics.strokeRect(x,y,width,height);
+        this.graphics.strokeRect(x,y, width,height);
         this.graphics.closePath();
         return this;
       },
@@ -273,9 +272,9 @@
        * @return jSketch
        * @memberof jSketch
        */
-      fillRect: function(x,y,width,height) {
+      fillRect: function(x,y, width,height) {
         this.graphics.beginPath();
-        this.graphics.fillRect(x,y,width,height);
+        this.graphics.fillRect(x,y, width,height);
         this.graphics.closePath();
         return this;
       },
@@ -287,9 +286,9 @@
        * @return jSketch
        * @memberof jSketch
        */
-      strokeCircle: function(x,y,radius) {
+      strokeCircle: function(x,y, radius) {
         this.graphics.beginPath();
-        this.graphics.arc(x,y, radius, 0, Math.PI * 2, false);
+        this.graphics.arc(x,y, radius, 0, 2*Math.PI, false);
         this.graphics.stroke();
         this.graphics.closePath();
         return this;
@@ -302,9 +301,9 @@
        * @return jSketch
        * @memberof jSketch
        */
-      fillCircle: function(x,y,radius) {
+      fillCircle: function(x,y, radius) {
         this.graphics.beginPath();
-        this.graphics.arc(x,y, radius, 0, Math.PI * 2, false);
+        this.graphics.arc(x,y, radius, 0, 2*Math.PI, false);
         this.graphics.fill();
         this.graphics.closePath();
         return this;
@@ -313,11 +312,17 @@
        * Experimental.
        * @ignore
        */
-      radialCircle: function(x,y,radius,glowSize,color1,color2) {
-        var g = this.graphics.createRadialGradient(x,y,radius,x,y, glowSize || 5);
-        g.addColorStop(0, color1 || this.graphics.fillStyle);
-        g.addColorStop(1, color2 || 'white');
-        this.beginFill(g).fillCircle(x,y,radius).endFill();
+      radialCircle: function(x,y, radius, glowSize, colors) {
+        var g = this.graphics.createRadialGradient(x,y, radius, x,y, glowSize || 5);
+        if (colors.constructor.name !== 'array') {
+          colors = [this.graphics.fillStyle, 'white'];
+        } else {
+          for (var s = 0; s < colors.length; s++) {
+            var color = colors[i];
+            g.addColorStop(i, color);
+          }
+        }
+        this.beginFill(g).fillCircle(x,y, radius).endFill();
         return this;
       },
       /**
@@ -348,7 +353,7 @@
        */
       eraser: function(brushSize) {
         if (typeof brushSize === 'undefined') brushSize = 15;
-        this.graphics.globalCompositeOperation = "destination-out";
+        this.graphics.globalCompositeOperation = 'destination-out';
         this.lineStyle(null, brushSize);
         return this;
       },
@@ -360,7 +365,7 @@
        */
       pencil: function(brushSize) {
         if (typeof brushSize === 'undefined') brushSize = 2;
-        this.graphics.globalCompositeOperation = "source-over";
+        this.graphics.globalCompositeOperation = 'source-over';
         this.lineStyle(null, brushSize);
         return this;
       },
diff --git a/sketchable.js b/sketchable.js
index eb660d1..cf8cccb 100644
--- a/sketchable.js
+++ b/sketchable.js
@@ -8,7 +8,7 @@
 */
 ;(function(window){
   // Custom namespace ID.
-  var _ns = "sketchable";
+  var _ns = 'sketchable';
   /**
    * Creates a <tt>sketchable</tt> instance.
    * This is a plugin for the <tt>jSketch</tt> drawing class.
@@ -66,18 +66,18 @@
       if (!data) {
         // Attach event listeners.
         if (options.interactive) {
-          Event.add(elem, "mousedown", mousedownHandler);
-          Event.add(elem, "mousemove", mousemoveHandler);
-          Event.add(elem, "mouseup", mouseupHandler);
-          Event.add(elem, "touchstart", touchdownHandler);
-          Event.add(elem, "touchmove", touchmoveHandler);
-          Event.add(elem, "touchend", touchupHandler);
+          Event.add(elem, 'mousedown', mousedownHandler);
+          Event.add(elem, 'mousemove', mousemoveHandler);
+          Event.add(elem, 'mouseup', mouseupHandler);
+          Event.add(elem, 'touchstart', touchdownHandler);
+          Event.add(elem, 'touchmove', touchmoveHandler);
+          Event.add(elem, 'touchend', touchupHandler);
           // Fix Chrome "bug".
           this.onselectstart = function(){ return false };
         }
         if (options.cssCursors) {
           // Visually indicate whether this element is interactive or not.
-          elem.style.cursor = options.interactive ? "pointer" : "not-allowed";
+          elem.style.cursor = options.interactive ? 'pointer' : 'not-allowed';
         }
       }
       var sketch = new jSketch(elem, options.graphics);
@@ -196,12 +196,12 @@
     destroy: function() {
       var elem = this.elem, data = dataBind(elem)[_ns], options = data.options;
       if (options.interactive) {
-        Event.remove(elem, "mouseup", mouseupHandler);
-        Event.remove(elem, "mousemove", mousemoveHandler);
-        Event.remove(elem, "mousedown", mousedownHandler);
-        Event.remove(elem, "touchstart", touchdownHandler);
-        Event.remove(elem, "touchmove", touchmoveHandler);
-        Event.remove(elem, "touchend", touchupHandler);
+        Event.remove(elem, 'mouseup', mouseupHandler);
+        Event.remove(elem, 'mousemove', mousemoveHandler);
+        Event.remove(elem, 'mousedown', mousedownHandler);
+        Event.remove(elem, 'touchstart', touchdownHandler);
+        Event.remove(elem, 'touchmove', touchmoveHandler);
+        Event.remove(elem, 'touchend', touchupHandler);
       }
       dataBind(elem)[_ns] = null;
 
@@ -239,8 +239,8 @@
    *     lineWidth: 3,
    *     strokeStyle: '#F0F',
    *     fillStyle: '#F0F',
-   *     lineCap: "round",
-   *     lineJoin: "round",
+   *     lineCap: 'round',
+   *     lineJoin: 'round',
    *     miterLimit: 10
    *   }
    * });
@@ -271,8 +271,8 @@
       lineWidth: 3,
       strokeStyle: '#F0F',
       fillStyle: '#F0F',
-      lineCap: "round",
-      lineJoin: "round",
+      lineCap: 'round',
+      lineJoin: 'round',
       miterLimit: 10
     }
   };
diff --git a/sketchable.memento.js b/sketchable.memento.js
index eeed477..68d6641 100644
--- a/sketchable.memento.js
+++ b/sketchable.memento.js
@@ -131,8 +131,8 @@
      * @memberOf MementoCanvas
      */
     this.init = function() {
-      Event.remove(document, "keypress", keyManager);
-      Event.add(document, "keypress", keyManager);
+      Event.remove(document, 'keypress', keyManager);
+      Event.add(document, 'keypress', keyManager);
     };
     /**
      * Destroy instance.
@@ -140,14 +140,14 @@
      * @memberOf MementoCanvas
      */
     this.destroy = function() {
-      Event.remove(document, "keypress", keyManager);
+      Event.remove(document, 'keypress', keyManager);
       this.reset();
     };
 
   };
 
   // Bind plugin extension ////////////////////////////////////////////////////
-  var namespace    = "sketchable";
+  var namespace    = 'sketchable';
   var availMethods = Sketchable.fn;
   var defaults     = Sketchable.fn.defaults;
 
@@ -191,7 +191,7 @@
 
     // Event order matters.
     // Init must go first, since it's called when instantiating the plugin.
-    var events = 'init mouseup clear destroy'.split(" ");
+    var events = 'init mouseup clear destroy'.split(' ');
     for (var i = 0; i < events.length; i++) {
       override(events[i]);
     }