I'm not going to get into the semantics of what an Easter egger is--that's a whole can of worms folks get pretty passionate about!
I'll just talk about egg color, cause I think that's what most folks are concerned about. That's going to depend on your current birds' genetic make-up. I'll give simplified examples that cover most scenarios..
If your hens lay blue eggs.....
you can breed them to a blue egg layer and get pullets that lay blue eggs
you can breed them to a brown egg layer and get green eggs
you can breed them to a white egg layer and get light blue eggs
If your hens lay green eggs....
you can breed them to a blue egg layer and get some blue, some green eggs
you can breed them to a brown egg layer and get some brown, some green eggs
you can breed them to a white egg layer and get light green eggs
Again, the above are generalities. Easter eggers are a genetic crapshoot and egg shell genes can get pretty complex, it's much more than A+B=C. This can give you some guidelines.
In my personal experience crossing Easter eggers, the beard/muffs seem dominant. I like that cause I love puffy cheeks!
pea combs are linked to blue/green eggs on the DNA strand.
