Highlight author comments

Hi there! I know there’s a lot of threads regarding my question, I’ve used the search but i can’t find none of my needs. Here’s what I’m looking for:

I want to make the author comments have a different color, the code I’m using is making that possible but after changing the design is not possible anymore.

The actual code for the comments:

<div id="comment-<?php comment_ID(); ?>" <?php comment_class('hentry'); ?>>
	<address class="vcard author entry-title comment-author">
		<?php
		if (function_exists('get_avatar')) {
		?>
		<span class="photo avatar"><?php echo get_avatar($comment, 60) ?></span>
		<?php
		}
		printf(__('%s', 'carrington-blog'), '<cite class="fn">'.get_comment_author_link().'</cite>');
		?>
	</address><!--.vcard-->
</div><!--.comment-->
<div class="entry-content comment-content">
		<?php
		if ($comment->comment_approved == '0') {
		?>
			<span class="revision"><?php _e('()', 'carrington-blog'); ?></span>
		<?php
		}
		comment_text();
		?>
</div><!--.entry-content-->

This actually checks the author in the vcard so when I try to change the color it doesn’t change it in the “entry-content”. See an screenshot here: http://i42.tinypic.com/24f0dco.jpg (pink = author)

So in other words, I need a function or something that check for the author in the “entry-content” div, and if it is, change the colors through css.

Any ideas? Thanks in advance!