Does anybody have any pink or plum eggs that would be willing to take pictures of the inside of the shell under the membrane, for me? I'm trying to figure out if it goes through the shell or if it is only on the outside. also I'm interested in, if your hen used to lay a different color egg, and now it has a pink-ish color to the shell. also if any of you have any knowledge about egg shell genetics, and want to share that would be great! What I "know" so far(feel free to correct me, I'm likely wrong): Eggs are either white or blue. the brown color is a pigment that is added on the outside of the egg before the cuticle/bloom. There are multiple genes for the different shades of brown. (the only number I've seen is 13 possibly more) the cuticle/bloom is a clear layer on the outside of the egg that protects the egg from bacteria, it is not a part of the shell, and it's application can overlap the time when the brown pigment is added causing the bloom to take on a color - pink. I also know there are color suppressing traits, but I haven't looked in to them yet. the problem, or question I'm running into with regard to genetics is: If the pink color is only showing because of the bloom, why are there egg shells that are pink on the inside? like post # 67 here: https://www.backyardchickens.com/threads/pink-eggs.454803/page-7 it's hard to see because the membrane is still on the inside of the shell, but it looks pink to me. And the person who took the picture thought it looked pink.