There's nothing special abut blue or green (or brown or dark dark chocolate brown) eggs other than color. The blue/green/dark brown eggs are very exciting for many people simply because of the novelty. They're used to white or light-medium brown eggs, so the other colors seem much more exciting being something that they don't see every time they go to the grocery store. If things go according to plan, I suspect that in a few years my now 8mo. old son will find white eggs to be pretty exciting since all he'll get at home are colored eggs. Just so happens that none of the breeds that lay white eggs have really piqued my interest. Novel colored eggs are exciting, but they have their drawbacks too. Birds that lay blue or green eggs usually just lay a medium sized egg and they often aren't as great a layer as some of the brown egg layers.
If your hubby really wants blue/green eggs that badly, maybe you could come to some sort of compromise. Maybe add a few colored egg layers to the mixed flock. Or, if you don't have room to add extra chicks, maybe rehome a couple (2-4) of the mixed layers to make room for a few colored layers.
If your hubby really wants blue/green eggs that badly, maybe you could come to some sort of compromise. Maybe add a few colored egg layers to the mixed flock. Or, if you don't have room to add extra chicks, maybe rehome a couple (2-4) of the mixed layers to make room for a few colored layers.