Hen with a laying issue

[EllieTheAmeru]

So, 2 of my hens have stopped producing their egg normal egg colors, (first hen is a French black copper maran ameru cross usually her eggs are a dark brown, Lately she's been laying a creamish colored eggs-1 year old-, Second hen is a Rhode island red-3 years old almost 4-, Her eggs have been the same as well, her normal eggs are a darker brown) I have been giving them oyster shells everyday, there's no other issues going on with them at all.

 

[Idaho Chicken Bungalow]

My Marans were laying lighter eggs just before their first major molt. Only one is back to laying. It's Dark brown again!!!

 

[aart]

So, 2 of my hens have stopped producing their egg normal egg colors, (first hen is a French black copper maran ameru cross usually her eggs are a dark brown, Lately she's been laying a creamish colored eggs-1 year old-, Second hen is a Rhode island red-3 years old almost 4-, Her eggs have been the same as well, her normal eggs are a darker brown) I have been giving them oyster shells everyday, there's no other issues going on with them at all.

Normal for brown coatings to 'thin' near the end of season.