docs: function symbolPathSetColor(color, innerColor) {
      if (this.type !== 'image') {
          var symbolStyle = this.style;
          var symbolShape = this.shape;
          if (symbolShape && symbolShape.symbolType === 'line') {
              symbolStyle.stroke = color;
          }
          else if (this.__isEmptyBrush) {
              symbolStyle.stroke = color;
              symbolStyle.fill = innerColor || '#fff';
          }
          else {
              // FIXME 判断图形默认是填充还是描边，使用 onlyStroke ?
              symbolStyle.fill && (symbolStyle.fill = color);
              symbolStyle.stroke && (symbolStyle.stroke = color);
          }
          this.dirty(false);
      }
  }