Map materials from cad import

I’m trying to map the materials from layers in the CAD file to be materials for the associated mesh that I have created.

does anyone know if this is possible ?

if not is there a way that you can make the material parameter for that mesh editable once imported in the revit file?

I think DirectShapes can only have one Material, each. For DWG or SketchUp-based cars, I put them into RFAs.