I have two marans. They both lay beautiful, dark, spotted eggs. The Splash lays 5 eggs a week and is very reliable. The BCM was laying 5 - 6 eggs a week until she suddenly went broody and stopped laying in June. Now she is raising chicks so I'm expecting her to start up again next month.
She will be culled from the breeder pen and very likely be rehomed to someone's layer flock. I'm bummed.
Ill post back with her egg color later if it changes. I still have 4 more Marans pullets waiting to lay their first eggs also.