Are you talking about the little panels above the doors? They are made of aluminum sheet covered with padded vinyl (naugahyde). They are attached with sheet steel angles that are attached to the car using sheet metal screws. The sheet metal angles were glued onto the aluminum but double stick badge tape works well. The pannels are roughly bullet shaped. There are four holes above the door. Two of them are for mounting the aforementioned panels and two are for mounting the rod that holds the visor on that side.
Since the underlying panels don't show, you can make them out of whatever you like.