You could indeed make a material file from default settings, and apply it to any material. That's effectively what the "maleposer" materials I referred to do. The search incidentally is not to the materials but to some poses which reset the nodes for various characters (sorry). The beauty of Netherworks script is that you can use it to effect all the materials in any figure or prop (as long as there's at least one figure loaded in the scene). Works brilliantly, and almost instantaneously.