from my limited experience, (three years) and reading thousands of posts on here on BYC, and looking at photos of French birds and flocks, I seriously doubt anyone on the planet has a flock that breeds true to the standard, consistently over generations. No one, not one, N E WHERE! It is not a true breeding color, period. All breeders will forever be juggling genes looking for a rare moment in time when all the genes line up and you get the "perfect" marans, and then what? What are you going to breed it to, your "other perfect marans" that you just happen to have a pen full of waiting for the perfect roo? Not likely. I know Don in particular, and most of us in general are wrestling with this apparent dilemma. Of course, all of us wish we had a flock of great birds that laid dark eggs, and bred true. Don't all marans breeders? Ain't gonna happen, ever, in my opinion. Our best bet is to just strive for (and show) the best birds, and combine them in the most complimentary breeding combos we have available in our back yards, or from eggs/birds gotten from others, and breed on and enjoy the company of whatever hatches, and go ga ga over the brown eggs and life goes on.