RIR and Buff Orpington chicks?

[elena de Gaia]

What Do the male and female chicks of a Rhode Island Red roo and a Buff Orpington hen look like? How about the chicks of an aracuna hen and RIR roo?Thanks for the help...I've got a lot of cute 3 week old chicks running about....each of my 5 hens contributed eggs to the broody hen's nest.