The default Template of WordPress don’t show the Sidebar on each page. One of the pages without sidebar is the comment page. I don’t like this behavior because a page without main navigation is a bit deceptive. To change this, we only need to change a few lines of code:

1. in single.php
   change the style of the div from widecolumn to narrowcolumn :

   <div id="content" class="narrowcolumn">

   at the end of the file add

   <?php get_sidebar(); ?>

   before

   <?php get_footer(); ?>

2. in header.php
   to give the sidebar the light gray background, we need to remove the if in the middle of the file. Change

   <?php

   // Checks to see whether it needs a sidebar or not

   if ( !$withcomments && !is_single() ) {

   ?>

   #page { background: url("<?php bloginfo(...repeat-y top;
    	border: none; }

   <?php } else { // No sidebar ?>

   #page { background: url("<?php bloginfo(...repeat-y top;
   	 border: none; }

   <?php } ?>

   to:

   #page { background: url("
   <?php bloginfo('stylesheet_directory'); ?>
   /images/kubrickbgwide.jpg") repeat-y top; border: none; }

If you want to add a Home Link into the comments page, extend the link area in single.php:

<div class="navigation">
 <div class="alignleft"><?php previous_post_link('« %link') ?></div>
 <div><a href="<?php echo get_option('home'); ?>/">Home</a></div>
 <div class="alignright"><?php next_post_link('%link »') ?></div>
</div>