Highlight Author Comment on wordpress post

While in custom theme development we need to highlight the post article author comment in comments, I have two technique to highlight the author comment area

first method is best for css and designing purpose, but we want to make different html of comment area or do more code we need second method.

1. wordpress automatically add class comment-author in tag of comment.

.comment-author{ background-color:#FFD700; }

2. We match author email and comment sender email.

$comment_author_email = get_comment_author_email();
if(get_the_author_email() == $comment_author_email) {
$hight_light_class = 'author_comment';
} else {
$hight_light_class = '';
}