My bantam eggs are pale too. Might have something to do with size. They store the pigment in skin and legs, and you can see they get paler over the laying season as the pigment goes into the yolk. Smaller birds have less room for storage and relatively large yolks. ??? just guessing. Try feeding them some greens every day and see if it helps. Grass will work. You can eat the pale ones, by the way. That's what the store boughts look like!I have been gathering the polish eggs and started to use them last night. cracked 3 and they were so pale ! I didnt use them. I need to figure that one out. They did have mites . they have been treated and I dont see anymore.