Originally Posted by
Lactose
Having the black underneath will give it a richer gold texture. It does have gold color, but I believe all the gold is just the flakes. So one layer of metalizer will give you flakes with the underlying color still showing, another layer gives you a darker gold etc. That was my understanding from the Dipyourcar video. Maybe someone else like Rey can chime in on this.
I believe dipyourcar sells wheel kits with the metalizer on top of any base color such as Red/White/Black. Im sure you can use the metalizer on any base. For example I wouldnt use black plastidip on my already black rims before the metalizer.