gistfile1.aw

<?php

add_action('wp_head', function () {
	$term_id = get_queried_object_id();

	if (! is_woocommerce() || ! $term_id || is_product()) {
		return;
	}

	$attachment_id = get_term_meta($term_id, 'thumbnail_id');

	if ($attachment_id && ! empty($attachment_id)) {
		$attachment_id = $attachment_id[0];
	}

	$css = '';

	if ($attachment_id) {
		// Has image
		$css .= 'header.entry-header.ct-container nav, header.entry-header.ct-container .ct-home-icon { color: #fff; }';
	} else {
		// No image
		$css .= 'header.entry-header.ct-container { min-height: 120px; }';
		$css .= 'header.entry-header.ct-container h3, header.entry-header.ct-container nav { color: black; }';
		// More styles that you might need...
	}

	echo '<style>' . $css . '</style>';
});