[Jean le Chauve]

{foreach from=$controls item=control}
<tr>
{if $control->type == 'checkbox'}
<td>{$control->control}</td>
<td>{$control->hidden}
{if $control->color != ''}
<font color="{$control->color}">{$control->prompt}{$control->marker}</font>
{else}
{$control->prompt}{$control->marker}
{/if}
</td>
{else}
<td>{$control->hidden}
{if $control->color != ''}
<font color="{$control->color}">{$control->prompt}{$control->marker}</font>
{else}
{$control->prompt}{$control->marker}
{/if}
</td>
<td>{$control->control}</td>
{/if}
</tr>
{/foreach}

Ou encore (avec l'ajout du post précédent) :
{if $k == 'nomDuChampCheckbox'}