Provide a way to fill detected objects with their natural colors

Provides a way to simply remove the background without changing objects' colors

README.md

@@ -28,7 +28,7 @@ Usage
   * `output [string]` - id of the canvas element you want the output to be displayed on (defaults to "move")
   * `width [integer]` - width of the image captured from the camera (defaults to 640 which is current biggest possibility)
   * `height [integer]` - height of the image captured from the camera (defaults to 480 which is current biggest possibility)
-  * `humanFill [property array object]` - color you want the detected objects to be filled with (defaults to { r: 0, g: 170, b: 242 }, which gives kind of light blue)
+  * `humanFill [property array object]` - color you want the detected objects to be filled with. You can also set it to { natural: true }, making the objects filled with their natural colors - this way you can simply remove the background (defaults to { r: 0, g: 170, b: 242 }, which gives kind of light blue)
   * `step [function]` - callback executed everytime a frame is rendered. Consider it something like a game loop - you can use it to draw something on your output canvas and/or detect its collision with human. This one does not default to anything, but you still don't have to provide it
   * `limitX [integer]` - number of X axis pixels checked for motion. Useful if you want to improve performance and need just some part of the area checked for movement (defaults to width)
   * `limitY [integer]` - same as above for Y axis (defaults to height)

move.js

@@ -154,6 +154,12 @@ Released under the terms of GNU General Public License (version 3 or later) (htt
 
           var current = lightnessValue(data[index], data[index+1], data[index+2]);
 
+					if(move.humanFill.natural) {
+						move.humanFill.r = data[index];
+						move.humanFill.g = data[index+1];
+						move.humanFill.b = data[index+2];
+					}
+
           outData[rawOffset] =
               (255 * lightnessHasChanged(rawOffset, current) << 24) | //a
               (move.humanFill.b << 16) |                              //b
@@ -168,8 +174,14 @@ Released under the terms of GNU General Public License (version 3 or later) (htt
           var index = rawOffset * 4;
 
           var current = lightnessValue(data[index], data[index+1], data[index+2]);
-
-          outData[rawOffset] =
+
+					if(move.humanFill.natural) {
+						move.humanFill.r = data[index];
+						move.humanFill.g = data[index+1];
+						move.humanFill.b = data[index+2];
+					}
+
+					outData[rawOffset] =
               (move.humanFill.r << 24) |                     //r
               (move.humanFill.g << 16) |                     //g
               (move.humanFill.b << 8) |                      //b