I do my metals in a couple of different ways. I sometimes do silver base, then the colour I want (say blue) Then a medium dusting of silver over that.
Or I will mix a colour into silver. Now with doing that you have to take into account that the silver will lighten any colour mixed. Some badly. Red mixed with Tamiya silver becomes Pink. So always go a darker shade of the colour you want, or I sometimes mix in a grey to darken it. This of course won't give you a historical accurate colour but it can give a very interesting effect.
Tamiya also has a couple of metallic colours. When I use them I do silver base, medium dusting of them then a silver dusting over the top. Lighter dusting if the colour coat is metallic. I do the same method when using the Model masters ( the testors colours, Hobby masters can't remember what they are called) automotive colours. They have some great colours but again doing this won't be exactly historically accurate.
I have never used Alclad. That seems to give a smoother less speckled effect. Not sure if other colours could be used or incorporated with it. I hope my rambling made some sense















































