I agree, you need a true blue egg................legbars, ameraucana or araucana (not the feedstore/hatchery variety, which are EE). You need a DARK brown egg, marans, penedesenca, emporadenesa (once again, don't go hatchery), a nice khaki olive egger. Then if you want to add ducks, my call ducks lay a pale blue egg, Cayuga lay gray/black egg. Hmmmm, lots of choices.
And I have nothing against feedstore/hatchery birds, I have some in my egg flock, but they won't lay the true color you are looking for.
But you need to turn those eggs over, always store pointy end down. The aircell is in the round/big end. Very important on hatching eggs and even with eating eggs. If you enter a competition where eggs are judged for eating quality, your entry will get tossed if the eggs are upside down.