code: protected function initOptions()
      {
          if(!$this->color){
              $this->color = 'bg-aqua';
          }
          $this->options = array_merge([
              'class' => 'col-lg-3 col-xs-6',
          ], $this->options);
          //Html::addCssClass($this->options, 'modal');
      }
docs: Initializes the widget options.
  This method sets the default values for various options.