Originally Posted by
dbaldacchino
Hmmm I'm not sure what you mean by that. Wall layers show up with whatever color is assigned to the layer material. The problem with having black filled walls is that if you set your coarse view fill to some other pattern (for instance some users use plan views set to coarse to show fire ratings by assigning special fill hatches to their walls), then you cannot have solid black walls without having to temporarily change the coarse fill, printing, and then changing all walls back.
So my "tip" is to use a 3D view, orienting to your plan view and making the light source horizontal, which in essence makes all walls look very dark in a shaded view. The problem is with windows, as described above, although there is a workaround. Also, there seems to be some ambient light when you use this technique and that's why you don't get perfectly solid black walls.