Does anyone know how to change the colours & line types of MV products in the 3D view? eg: doors, shelves etc...

I know how to do it in each room with AutoCAD layers.

But I want to customise the products and save them back with those line types and colours, so they draw in as such on every new project/room.

Does anyone know how to do this? I'm sure it's something really simple I'm missing...

Cheers!