We have had a lot of rain in the last few weeks, and our grass, which was completely brown and dead, to grow like crazy. The chickens like eating the grass, and this deepened the color of the egg yolks dramatically:
Deeper colored yolks mean a more nutritious egg, so these must be really healthy!
Granddad used your eggs in his omelet Saturday. He noticed the darker yolks. We agree, more nutritious & tasty. We were glad to have them.