The text of the DataTable headers are not visible when I use the Default DataTable template (YUI).

Example of HTML output:

<div  class="yui-skin-sam">

<div id="s-qJHNVXFWV4ayQ1ShcUmg_formId-container" class="yui-skin-sam">
<table id="s-qJHNVXFWV4ayQ1ShcUmg_formId-container-table">
...
<!-- table structure o.k. -->
...
</table></div>        <script type="text/javascript">
new WebGUI.Form.DataTable( "s-qJHNVXFWV4ayQ1ShcUmg_formId-container", [ ... 
], {"ajaxSaveUrl":null,"ajaxSaveFunc":"view","showEdit":0,
"inputName":"s-qJHNVXFWV4ayQ1ShcUmg","ajaxDataUrl":null,"ajaxDataFunc":null} );
        </script>
</div><!--yui-skin-sam-->

</div> <!--dataTable--></td>