Updated background color and added some comments

src/js/includes/Canvas.js

@@ -17,7 +17,7 @@ var Canvas = fabric.util.createClass(fabric.Canvas, {
             enableRetinaScaling: true,
             renderOnAddRemove: false,
             stateful: false,
-            backgroundColor: '#d4d4d4',
+            backgroundColor: '#d2d2d2',
             preserveObjectStacking: true,
             selection: false,
             width: 1253,

src/js/includes/ImageEditor.js

@@ -7,7 +7,9 @@ function ImageEditor(canvasId, args) {
     var _canvas;
 
     var _settings = $.extend({
+        // Type defaults to wallpaper
         type: 'wallpaper',
+        // Default texts on the buttons. This van
         buttons: {
             flat: 'Flat',
             threeD: '3d',