First I want one. Second...You hatch out Olive Eggers...you get roos and hens. If you mate the Olive Egger Roo to the Olive Egger hen, do the Olive Eggs stay true or do you get some dk brown and blue/green eggs too. Just curious.
If mated together, you do indeed get a chance of brown and normal green egg layers. The thing about Olive Eggers, to successfully breed them - Take one and breed it back to either a dark layer or a blue layer. The blue layer gives you more of a green egg, the dark brown layer gives you a darker olive. After that you can go back to the blue layer and get the same olive from the beginning again.
Some people have indeed bred OE x OE, and you do get some olive eggs out of it, but not 100% of them are.
I am not planning on breeding, because I really can't keep roosters, (live in a neighborhood) and just have a small flock. But wow, that sounds like fun!!! I'm envious of those who can play with the genetics of egg colors!