I want to change the titles "Name", "Email", and "Website" in my comment form?.  How could I do this?  I thought by changing them in this field would work ( 'Website', 'domainreference' ) but it doesn't change anything.  Any help would be appreciated.

Here is my comments.php


<!-- begin snippet: js hide: false console: true babel: false -->

<!-- language: lang-html -->

    <?php if ( have_comments() ) : ?>
        <h4 id="comments"><?php comments_number('No Comments', 'One Comment', '% Comments' );?></h4>
        <ol class="comment-list">
    <?php wp_list_comments('callback=custom_comments');?>
    	</ol>
    <?php endif; ?>

    <?php
        $comments_args = array(
      'id_form'           => 'commentform',
      'class_form'      => 'comment-form',
      'id_submit'         => 'submit',
      'class_submit'      => 'submit',
      'name_submit'       => 'submit',
      'title_reply'       => __( 'Post a comment' ),
      'title_reply_to'    => __( 'Leave a Reply to %s' ),
      'cancel_reply_link' => __( 'Cancel Reply' ),
      'label_submit'      => __( 'Post Comment' ),
      'format'            => 'xhtml',
        
            
            

      'comment_field' =>  '<p class="comment-form-comment"><label for="comment">' . _x( 'Join the Conversation', 'noun' ) .
        '</label><textarea id="comment" placeholder="Comment" name="comment" cols="45" rows="8" aria-required="true">' .
        '</textarea></p>',

      'must_log_in' => '<p class="must-log-in">' .
        sprintf(
          __( 'You must be <a href="%s">logged in</a> to post a comment.' ),
          wp_login_url( apply_filters( 'the_permalink', get_permalink() ) )
        ) . '</p>',

      'logged_in_as' => '<p class="logged-in-as">' .
        sprintf(
        __( ' <a href="</a>. <a href="%3$s" title="Log out of this account"></a>' ),
          admin_url( 'profile.php' ),
          $user_identity,
          wp_logout_url( apply_filters( 'the_permalink', get_permalink( ) ) )
        ) . '</p>',

      'comment_notes_before' => '<p class="comment-notes">' .
        __( '' ) . ( $req ? $required_text : '' ) .
        '</p>',
            
            
     'author' =>
        '<p class="comment-form-author"><label for="author">' . __( 'Name', 'domainreference' ) . '</label> ' .
        ( $req ? '<span class="required">*</span>' : '' ) .
        '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) .
        '" size="30"' . $aria_req . ' /></p>',

      'email' =>
        '<p class="comment-form-email"><label for="email">' . __( 'Email', 'domainreference' ) . '</label> ' .
        ( $req ? '<span class="required">*</span>' : '' ) .
        '<input id="email" name="email" type="text" value="' . esc_attr(  $commenter['comment_author_email'] ) .
        '" size="30"' . $aria_req . ' /></p>',

      'url' =>
        '<p class="comment-form-url"><label for="url">' . __( 'Website', 'domainreference' ) . '</label>' .
        '<input id="url" name="url" type="text" value="' . esc_attr( $commenter['comment_author_url'] ) .
        '" size="30" /></p>',          

     
            




    );
        comment_form($comments_args);
    ?>


<!-- end snippet -->


Also kind of unrelated to the question.  The comment form shows up first and is then followed by the Name, Email, and Website forms.  Is there a way to make it so that the Name, Email, and Website forms are first followed by the comment form last?