Basement floor

Well, the basement floor tiles are fairly much in. The tiles are all down and the big room is grouted. I think they look pretty good and I am quite excited to have the house pretty much finished and usable inside. Downstairs is where we will have the guest room and eventually, the office.

Here is the hallway, with ungrouted tiles:
Here is the future office, with everything complete:

So right now all of the walls are white, but I think we will paint them. The big question is which colours to use? What goes best with a terracotta/reddish-brown floor?

Since this is a downstairs floor, I think the walls should be a light a colour as possible so that it does not feel closed in and cave-like, but I am not too sure what colours actually go best with this floor. I welcome any suggestions from the more decorative minded than myself.

One funny thing is that in order to get this floor in, we had to move EVERYTHING into the storage room to free up the floor space. This storage room is literally filled wall to wall with boxes, furniture, and miscellaneous junk. Here is a view in the door...