jquery first word

Drupal.behaviors.listWords = {
      attach: function () {
          $.fn.paintFirstWord= function(color) {
              var str = this.text();
              var splited = str.split(' ');
              var replaced = str.split(splited[0]).join('<span style = "color:' + color + ';font-weight:bold">' + splited[0] + '</span>');
              this.html(replaced);
          };

          $('.pane-fpid-136 li').each( function() {
              $(this).paintFirstWord('#e31d34');
          });
      }
  };