Personally I'd breed 'em to each other if they were a pair. Because no other Polish color out there can help you, really. Crele is supposed to be wildtype duckwing with barring, but can be partridge with barring, too. No Polish have those base colors (duckwing or partridge) except I'm hoping Creles do, and I've heard once of a Partridge Polish being around. Saw a photo and that was all.