Here is the function;

function remove_comment_author_class( $classes ) {
	foreach( $classes as $key => $class ) {
		if(strstr($class, "comment-author-")) {
			unset( $classes[$key] );
		}
	}
	return $classes;
}
add_filter( 'comment_class' , 'remove_comment_author_class' );

Here is the original post!

Here is the code;

<?php
$query = "SELECT * from $wpdb->comments WHERE comment_approved= '1'
ORDER BY comment_date DESC LIMIT 0 ,5";
$comments = $wpdb->get_results($query);

if ($comments) {
    echo '<ul>';
    foreach ($comments as $comment) {
        $url = '<a href="'. get_permalink($comment->comment_post_ID).'#comment-'.$comment->comment_ID .'" title="'.$comment->comment_author .' | '.get_the_title($comment->comment_post_ID).'">';
        echo '<li>';
        echo '<div class="img">';
        echo $url;
        echo get_avatar( $comment->comment_author_email, $img_w);
        echo '</a></div>';

        echo '<div class="txt">Par: ';
        echo $url;
        echo $comment->comment_author;
        echo '</a></div>';
        echo '</li>';
    }
    echo '</ul>';
}
?>

This code shows 5 recent comment. If you change “5” in line two, you can display more comment or less…

Here is the code;

<?php if(isset($_COOKIE['comment_author_'.COOKIEHASH])) {
	$lastCommenter = $_COOKIE['comment_author_'.COOKIEHASH];

	echo "Welcome Back ". $lastCommenter ."!";

	} else {

	echo "Welcome, Guest!";
} ?>

That’s All. Have a nice day!

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!