Good point Hans.

I have learned to set the material properties before the last export because of this. I try to only set colors because they leave both the object and thus the library a little smaller than with textures. Only when I use a custom texture or when a specific texture is required I export with that texture so it's included with the object.

It certainly would be easier if we could set the materials in the furniture library too, it's an appropriate place to do so.