My honest take on it:
The blue eggs are a novelty and really do not change anything in terms of what you're actually getting. Its the same quail the only difference is the egg shell color. Now I am one that loves an egg basket full of a rainbow of eggs. BUT I wouldn't pay a premium for the novelty of it. I *may* buy a hen if I knew for sure she laid blue eggs just for my kids to get excited to see a blue egg (much like how I ended up with my easter egger chicken LOL) but if I was actually looking for production purposes I don't think I'd bite because its the same bird, same meat, same production, same eggs minus color so I wouldn't fill my barn with them just because.
Now with all of that said there is a market for them but I'd bet you're going to need to be looking into shipping eggs to get a premium for them. I see them on eBay regularly for $25+ per doz.
Chicks it just depends on who is looking when you have them. Since you're just starting you have plenty of time to research but watch this spring local ads and see how much quail are selling for. I'd caution you to advertise them as blue layers unless you know for sure or you could end up with some unhappy customers so likely I'd sell them for the going rate of quail around you.
I do see a lot of people mixing blue eggs in with standard eggs. It helps the standard eggs sell faster and for more money because they think they're getting something special with them that isn't "normal". If you're selling full dozens for a premium tho your customer specifically is the one looking for blue eggs so a much smaller market.
EDIT: So your key to selling them for a higher price is likely going to be the online route. If you're only selling local I could only maybe see charging a $1 or so at most over what normal quail eggs are going for.