I have 6 hens, as of yesterday 4 are now laying. Yesterday, while I was out, a VERY light brown/cream colored egg appeared. I assumed it was from our Black Australorp, but I was wrong. Today I went out to check for eggs and our Americana was on her nest. When she left the hen house I went out to see if she had laid an egg and there was an egg identical to the small egg from yesterday. I thought she was going ot lay either light blue or light green eggs. My 4 year old sone has his heart seet on colored eggs from his Mirabelle. Will the color change or is this the color she is going to lay?