Okay maybe these photos can help solve my mystery

[Bracedagr8]

The eggs are light brown just started laying the last said could be hatchery stock blue copper marans which wouod explain the light color eggs???? Maybe a blue copper mix??

 

[OldChurchEggery1]

Maybe, but Marans have pink skin as well. Not all of them have feathered legs, but that's part of the French standard for Marans. I wish I knew for sure so I could help you out.