fix highlighting of support messages

www/admin/app-admin.less

@@ -27,6 +27,8 @@
     .cp-support-list-actions {
         margin: 10px 0px 10px 2px;
     }
+
+    .cp-support-list-ticket:not(.cp-support-list-closed) {
         .cp-support-list-message {
             &:last-child:not(.cp-support-fromadmin)  {
                 color: @colortheme_cp-red;
@@ -36,6 +38,7 @@
                 }
             }
         }
+    }
 
     .cp-support-fromadmin {
         color: @colortheme_logo-2;