Well, I am not sure I completely understand about the styling in the <td> but one of the things I do almost as a default is add a class to the central <td> for all pages. Then I can style it a bit more effectively.
It's in tpl_main_page.php
It reads:
and I just change it to something like:
Code:
<td class="central_td" valign="top">
so that the rule in the stylesheet will read
Code:
.central_td{background-color:red;}
or whatever.....
or more specifically for the home page
Code:
#indexHomeBody .central_td{background-color:red;}