I've found a brand of eggs that I like at the local grocery store that are "known" for their rich golden yolks and I have to say I'm impressed with the flavor. Especially in comparison with the organic, cage-free, pastured eggs I've been able to find in the local grocery stores (haven't found a farm to supply me yet). The organic, cage-free, pastured one's I've found have had really bland colored yolks with equally bland flavor. The brand I like claims to be natural but doesn't indicate that they are cage-free or pastured.
My question? Are there things manufacturer's can do with eggs after they're laid to mess with the color and flavor?