This can be done with just a template edit rather then a product thanks to Imageshack.
http://reg.imageshack.us/vb.php
Oh and if you coded the tables like this:
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
<td class="thead" align="left">Quick Attachment</td>
</tr>
<tr>
<td class="alt1" align="center">
Your code here
</td>
</tr>
</table>
That would eliminate the need to change colors as this will use alt 1 and alt 2 of the template.