Brown Eggs Turning White?

[walnuthollow07]

Hope someone can help us. The last three days our nice brown eggs have been very light tan to white in color. We haven't done anything different with the feed and they are not on any medicine. We have red stars, black stars, and black astrolorps. I'm afraid we could start losing customers.

 

[Den in Penn]

How old are they? Have they been laying non stop for a while? The older they are and/or the longer they lay non stop the eggs can get lighter. The pigment glands just get tired.