code: function (x, y, width, height, color) {
  
  		var i,
  			iLen = x + width,
  			j,
  			jLen = y + height,
  			index;
  
  		for (i = x; i < iLen; i++) {
  			for (j = y; j < jLen; j++) {
  				index = this.getIndex(i, j);
  				this.setAtIndex(index, color);
  			}
  		}
  	}
docs: Fills an area with the specified color
  
  @method fillRect
  @param {int} x Starting x-coordinate
  @param {int} y Starting y-coordinate
  @param {int} width Width of area relative to starting coordinate
  @param {int} height Height of area relative to starting coordinate
  @param {object} color
  @param {int} [color.red] Red channel of color to set
  @param {int} [color.green] Green channel of color to set
  @param {int} [color.blue] Blue channel of color to set
  @param {int} [color.alpha] Alpha channel for color to set
  @param {float} [color.opacity] Opacity of color