Is she laying? If she give you blue or green eggs, then EE. I'm can't see the comb well enough to say, but she really doesn't have EE characteristics, she looks like a mixed breed hen to me.
I never really thought about having a colorful carton and just got breeds I thought were interesting. It just turned out that they all lay slightly different colors and I love it!! I usually make some sort of pattern with the pretty green ones.
You could call the silver bird an ameracauna, it does have a muff/beard, but don't expect to be able to show it. Non standard color, what is commonly known as pet stock. Most birds sold as ameraucaunas are pet grade. If your fair has a pet section your kids could probably exhibit some of your birds...
Can someone please confirm what u believe to be EE's. My uncle keeps telling me they're Aracaunas, they were sold to me as Americanas. Also, are they both pullets? Or is there a rooster?