code: @Override
      public void renderHead(final IHeaderResponse response) {
          // select bootstrap tab for current theme selected
          int selectedTab = this.getSelectedTab();
          response.render(OnDomReadyHeaderItem.forScript("$('#themes li:eq("
                  + selectedTab + ") a').tab('show');"));
      }
docs: Highlights the currently selected theme tab
  @param response .