[WordPress] WooCommerce: Display product variation attributes on product category pages.

content-product.php

<?php
/*
 * Regular content of content-product.php
 * ...
 * ...
 */

/** 
 * Display product variation attributes on product category pages. 
 * 
 * Add i.e. after do_action( 'woocommerce_after_shop_loop_item_title' );
 * Can also be hooked from outside the template.
 */
if( is_product_category() ) :

	$attributes = $product->get_attributes();

	foreach ( $attributes as $attribute ) :

		if ( empty( $attribute['is_variation'] ) || ( $attribute['is_taxonomy'] && ! taxonomy_exists( $attribute['name'] ) ) )
			continue;
		else
			printf( '<span class="product-attribute">%s</span>', wc_attribute_label( $attribute['name'] ) );

	endforeach;
endif;

/*
 * More of content of content-product.php
 * ...
 * ...
 */

I've tried adding this to my content-product page. Should I be changing something within your code to target a specific attribute?