One of my brown egg layers keeps having an egg that the color seems faded or whitewashed looking on say 75% of the egg. More so in the middle around the entire egg, but looks normal around the tips. It reminds me of very dry and ashy looking skin. When I wash it, it brings the color back to a brown glow, but as soon as it dries, it looks washed out and faded again. Is this something that I need to worry about? I've read the thread about egg irregularities and weird eggs, but couldn't find anything related to this.