Change color in left column

[Casinopa]

If I wanted to change the color of, say, my left column, the OSC manual says to do the following:

 

***************************************

Put this code in the default.php page and each page under /catalog/ with the color you

want.

 

Left Column Color

< !-- body //-->

< table border="0" width="100%" cellspacing="0" cellpadding="3">

< tr>

< td width="<?php echo BOX_WIDTH; ?>" valign="top" bgcolor="#5a6ba5"><table border="0" width="<?php echo BOX_WIDTH; ?>" cellspacing="0" cellpadding="8">

< !-- left_navigation //-->

***************************************

 

Is there some way to apply the color change to more than one page at a time???? Otherwise, this is going to be VERY tedious...