Cuckoo Orpingtons

[Country-Wife]

I got this group of Orpingtons, they come from a solid red and red cuckoo hen and a red cuckoo rooster Orpington. I love the Roos colouring. Would the cockerel be called buff? Was planning on breeding this group but would like to add some breeding lines can I use a creole or buff ( like cockerel) Orpington or just stick with the solid red or red cuckoo?
First pic is cockerel and the rest are pullets
Thanks all