code: function setColor(color) {
           var alpha = this.currentColor.glArray[3];
           this.currentColor.copy(color);
           this.currentColor.glArray[3] *= alpha;
         }
docs: Set the current fill & stroke style color.
  By default, or upon reset, the value is set to #000000.
  @name setColor
  @memberOf me.WebGLRenderer.prototype
  @function
  @param {me.Color|String} color css color string.