Real stone can look very different from different quarries. I think you need to see at least a large pice of this in your home with your lighting since you are concerned about the blue tone. The lighting in a the shop could be much different than your lighting and IMO if you want help here we need to see the choices you have made for other elements .

Ask them to take one of the slabs outside so you can see it in natural light. Some of the warehouse lighting is the worst lighting you will ever find! I've never had a slab yard refuse to take a slab outside.