protected function _get_system_schemes_to_print()
{
$schemes = $this->get_system_schemes();
$items_to_print = [self::COLOR_1, self::COLOR_5, self::COLOR_2, self::COLOR_3, self::COLOR_6, self::COLOR_4];
$items_to_print = array_flip($items_to_print);
foreach ($schemes as $scheme_key => $scheme) {
$schemes[$scheme_key]['items'] = array_replace($items_to_print, array_intersect_key($scheme['items'], $items_to_print));
}
return $schemes;
}