I have seven 22 week old EEs, and 5 of them are now laying. I've noticed that their egg color varies a lot from day to day. Sometimes it's a nice dark olive, or light green, and even blue sometimes. I know I'm not getting the pullets mixed up since I keep track of which pullet is in which nesting box. When I got my EEs I knew that they only lay one color for life, maybe a little color difference in each egg, but from green to blue seems like more than a small change. Is this normal? Has anyone else noticed the same thing in their EE hens?