Blue egg to tan?

[MiriCameron]

I have 3 blue/green egg layers. Lately I'm getting one tan one instead of blue. I only have 6 chickens, so this picture was taken on a day they all laid. Any idea why blue has turned to tan?

 

[Perris]

hello @MiriCameron - welcome to BYC
I think it's not possible for blue eggs to change to tan - it's not a coating on the outside, as brown eggs are created by the bloom; the blue is intrinsic to and goes right the way through the shell. Is it possible that one of the tan eggs was laid the day before?

 

[chrissynemetz]

@Perris is correct, blue eggs can only vary in shade, it's not possible for them to turn tan. Those are some very pretty eggs btw.