P1NK

thanks bdbrown for reply.

this theme has below code:

/* post author & admin comment */
.commentlist li.bypostauthor > .comment-body:after,
.commentlist li.comment-author-admin > .comment-body:after { background: #3b8dbd; display: block; position: absolute; content: "\f040"; color: #fff; line-height: 12px; width: 12px; font-style: normal; font-family: FontAwesome; text-align: center; }
.commentlist li.comment-author-admin > .comment-body:after { content: "\f005"; /* star for admin */ }
.commentlist li.bypostauthor > .comment-body:after,
.commentlist li.comment-author-admin > .comment-body:after { top: 32px; left: -28px; font-size: 10px; padding: 2px; -webkit-border-radius: 3px; border-radius: 3px; }
.commentlist li li.bypostauthor > .comment-body:after,
.commentlist li li.comment-author-admin > .comment-body:after { top: 22px; left: -26px; font-size: 8px; padding: 1px; -webkit-border-radius: 2px; border-radius: 2px; }

that code insert star icon for admin username but another admin don’t have star icon on their avatars.
i need some code for highlight other admin comment

i think,This method would fail for multi-admin blogs!