i have a problem with Disqus integration in plain js. All text colors are right except for user names:

The js integration is standard, setting for theme in Disqus admin is "Auto".

var disqus_config = function () {
    this.page.identifier = '<?php echo str_pad($product_id, 8, "0", STR_PAD_LEFT); ?>';
};
(function() { // DON'T EDIT BELOW THIS LINE
    var d = document, s = d.createElement('script');
    s.src = 'https://xxx.disqus.com/embed.js';
    s.setAttribute('data-timestamp', +new Date());
    (d.head || d.body).appendChild(s);
})();

This is the generated css that Disqus use:

Usual css edits not work, also js style updates not work.

Thanks.

Edit: added js declaration code.