The color is Lavendar, and it looks to be an Orpington, but its beak is somewhat mottled, so it could be either a light-colored Lavender, a Cuckoo Lavender, or a Lavendar crossed with something else such as an Australorp. I have a couple of Buffs that were crossed with an Australorp that have the same mottled beak, and they also have some black leakage; that's what I mentioned that last option.
Have you had the chance to ask the breeder what it could be, and have you seen the birds that produced the chicks?