您可以这样做，将查询附加到永久链接（而不是基本url）：

add_filter( \'post_type_link\', \'my_append_query_string\', 10, 4 ); 
function my_append_query_string( $permalink, $post, $leavename, $sample ) { 
    if ( $post->post_type == \'shop\' )  {
        if (get_option(\'permalink_structure\')){ 
            $permalink = AddStringToUrl($permalink,\'color=red\');
        }
    }
    return $permalink;
}

function AddStringToUrl($current_url, $string) {
    return $current_url  
           . ( stripos($current_url, \'?\') === false ? \'?\' : \'&\' ) 
           . $string; 
}