Hi, if that screenshot is from the url in your signature here, just add class="alt1" into this line of the code:
Code:
<td style="border: $stylevar[cellspacing]px solid $stylevar[tborder_bgcolor]; border-top: 0px" align="center" valign="bottom">
like this:
Code:
<td style="border: $stylevar[cellspacing]px solid $stylevar[tborder_bgcolor]; border-top: 0px" class="alt1" align="center" valign="bottom">
That's the line right before:
Code:
$template_hook[postbit_signature_start]
And that should take care of it for you