colorless eggs?

[rgraz]

I have 3 easter eggers that are a little less than a year old. I let them free range in the backyard. They have been laying very well for several months now (about 5 eggs a week each). One lays pink eggs one green and one blue. As of the last few weeks, however, two of them have started laying white eggs, and I have noticed there has also been some small bumps on the surface of the eggs as well. All else seems to be in order with the chickens (i.e. no other symptoms). The food has not been changed, nor has anything else that I am aware of. Please let me know if others have experienced this, and what the issue could be. Thanks!

 

[CMV]

The bumps are calcium deposits which is normal. Depending on where they are in the laying cycle their eggs fade in color. If they were pale to start with then they could bleach out to just a tinted egg color. When you scrub away the bloom are they back to normal?