Right, it was a bit confusing, but I was agreeing with the PP who stated this, not trying to contradict. I was just explaining that, although PP thought she had an Auracana, she really has an Easter Egger.
OP, I wonder if your girls were molting, that's why they weren't laying, and now are starting laying again. I have found a few threads on here where an EE has switched from laying blue to brown after a stress or molt.
https://www.backyardchickens.com/t/236102/my-ees-egg-color-changed-from-blue-to-brown
https://www.backyardchickens.com/t/636856/can-a-ameraucana-chicken-change-its-egg-color