He pauses briefly because how could she know that? Is she staying nearby or is she supposed to be there too? He admittedly hasn't explored the whole house just yet but he's pretty sure his sense should have picked up her presence. "Actually, yeah-I mean it's like uh... slate blue but.. how'd you know?"

Not that he even really cares. It's a really pretty house and he'll be more than happy to share it with her.