Remove render_custom_styles($data[‘options’])

Hi,

using validator.w3.org I get an error message from this line of code:

<?php
    }
        render_custom_styles($data['options']);
    } else {
?>

Element style not allowed as child of element div in this context. (Suppressing further errors from this subtree.)

This is this part:

<style>↩
    .stars, .rr_star {↩
        color: #ffaf00;↩
    }↩
</style>↩

Is it possible to remove this part? And style the stars in my CSS file? If I remove the PHP part the page is broken… How do I remove the added <style>…</style> part of this code. I would like to remove this error on validator.w3.org.