Since they are blueish the buff orp could have had blue bred into them so that the peppering in tail and such would be lighter and not as noticable, I know that some silkie breeders do that. So if the buff could be carrying blue, the cockerels will be poor blue laced gold and the pullets will have poor lacing, same pattern. The gold laced could be carrying partridge, I know Grant Brereton bred partridge into his gold laced to improve type.