The VMC is a powerful script that allows you to change the properties of materials or textures in your scene, selection or material editor.
Version 2 has been completely re-written and now includes support for all Vray materials and Textures like VrayDirt, VrayHdri, native Bitmap texture, Color Correction Map, MultiTexture, MultiScatterTexture and ForestMaterial.
It also boasts a handy subdiv reset for getting old scenes & models where you want them.