Supreme Directory – How to translate comments area at posts

Hi friends,

I had difficulties to translate a few strings around the comments at the bottom of blog posts.

I found out the contents are coming from the comments.php of the directory starter theme:

	$args = apply_filters('dt_comment_form_args', array(
			'title_reply' => __('Schreibe einen Kommentar', 'directory-starter'),
			'label_submit' => __('Kommentar absenden', 'directory-starter'),
			'comment_field' => '<p class="comment-form-comment"><label for="comment">' . __('Kommentar-Text', 'directory-starter') . '</label><textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea></p>',
			'must_log_in' => '<p class="must-log-in">' . sprintf(__('<a href="%s">Melde dich an</a> um Kommentare zu schreiben.', 'directory-starter'), $login_url) . '</p>'
	));
	comment_form($args);

So what I did is to copy the comments.php and add it to my supreme directory clone theme folder, to make it kinda update safe. Is there some smarter way to do this? Maybe an update of directory starter with those areas also being update ready?

Thanks in advance,
Atilla