Car Paint Shader Improvements

I'm am finishing up the final features of the car paint material. Already, there is a functioning masking system and the added ability to use custom normal maps which affect all layers! The last couple of features I would like to add are: grunge/rust based on either mask or vertex colors, and maybe a rain layer. As soon as I implement a feature, there is another good idea around the corner. 

Here is a little preview of what's now possible with the system.