How about white walls, nobody has black walls in their rooms. Stairs are pretty clear. But we're getting closer. Mark still doesn't like black walls, wants brighter colors. Ah, some depth back, but almost the 3D again.
Walls seem too thick and black.
Architecture drawings tend to have white walls. Uses vector graphics which are harder to draw but result in smaller download file sizes. But walls seem too tall. At this point some folks are calling for a more functional, simple 2D map. Mark goes out and buys books on architecture design, and we choose styles we like and fax them to our graphic artist.