Basically chickens bred to produce colored eggs but not bred to meet any standard. They can sometimes be a mix of anything and occasionally you get some that don't lay colored eggs because of that. All hatchery araucanas, ameraucanas, and whatever spelling you/they want to use are actually EEs and rarely purebred. Even if they are purebred they have been bred only for egg production not to show standard and lack many of the basics that make up any of the purebred blue/green layers.
Where did you order Araucanas from? If it was from a hatchery chances are you are going to be getting Easter Eggers as they use the name Araucana / Ameraucana to market them. If you want true Araucanas, you will want to look for a breeder.
Thanks for the info,I just found out how to get to the threads that I wrote on.They are a week old now,I ordered them from my milling company so I don`t know if they are true auracana but they are cute and hope that they lay the colored eggs,I still can figure out how to post pictures or I would send pictures