You can seperate the author comment from the reader comments. That’s needed some change in your css file and comments.php file. After that author comments shown in a different background color. Let’s begin…

Here is the code;

First one in comments.php file. Find this code;

<li <?php echo $oddcomment; ?>id="comment-<?php comment_ID() ?>">

And change with this one;

<li class="<?php if ($comment->user_id == 1) $oddcomment = "authorstyle"; echo $oddcomment; ?>"

After that open your style.css file and add this lines in to it;

.authorstyle {
background-color: #B3FFCC !important;
} 

That’s All. Have a nice day!