Custom layout should keep default class for each column

For example the label column doesn't have its default class: labelColumn

A default layout has

<td class="labelColumn">
<h:outputText value="#

{messages[widget.label]}" />
</td>


but the one from Studio has no class for the TD tag

<td
colspan="#{nxu:test(widgetIndex==0, labelRenderingColspan-renderingColspanMin, labelRenderingColspan)}">
<b>
<h:outputText value="#{messages[widget.label]}

"
styleClass="#

{nxu:test(widget.required and isEditMode, 'required', '')}

" />
</b>
</td>

As a consequence, the display for required fields is bad, with the star stuck to the label.

Moreover, is it possible to remove the tag B and use the default class labelColumn instead ?