$product = get_product();
global $variable_id;
global $color;
if ($product->product_type == "variable") {
    $variations = $product->get_available_variations();
    foreach ($variations as $variation) {
        $color = $variation["attributes"]["attribute_pa_colour"];
        $variable_id = $variation['variation_id'];
        wc_get_template_part('content', 'product');
    }
} else {
    $variable_id = null;
    $color = null;
    wc_get_template_part('content', 'product');
}

private function query_products( $args ) {
    // Set base query arguments
    $query_args = array(
        'fields'      => 'ids',
        'post_type'   => 'product',
        'post_status' => 'publish',
        'meta_query'  => array(),
    );
    if ( ! empty( $args['type'] ) ) {
        $types = explode( ',', $args['type'] );
        $query_args['tax_query'] = array(
            array(
                'taxonomy' => 'product_type',
                'field'    => 'slug',
                'terms'    => $types,
            ),
        );
        unset( $args['type'] );
    }

    // Filter products by category
    if ( ! empty( $args['category'] ) ) {
        $query_args['product_cat'] = $args['category'];
    }

    // Filter by specific sku
    if ( ! empty( $args['sku'] ) ) {
        if ( ! is_array( $query_args['meta_query'] ) ) {
            $query_args['meta_query'] = array();
        }
        $query_args['meta_query'][] = array(
            'key'     => '_sku',
            'value'   => $args['sku'],
            'compare' => '='
        );
        $query_args['post_type'] = array( 'product', 'product_variation' );
    }
    $query_args = $this->merge_query_args( $query_args, $args );
    return new WP_Query( $query_args );
}