code: function (renderer, rect) {
              var color = renderer.getColor();
              var vpos = me.game.viewport.pos;
              renderer.setColor(this.color);
              renderer.fillRect(
                  rect.left - vpos.x, rect.top - vpos.y,
                  rect.width, rect.height
              );
              renderer.setColor(color);
          }
docs: draw the color layer
  @ignore