Rear Shock Absorber and Spring Factory Colour?

Hello all and greetings from Australia,

What are the colours for the rear shock absorber and spring? I've been through all my books and cant see an example. I have a 1962 VNB

Is it;
* Aluminium spring/black shock
* Black spring/aluminium shock
* All black
* All aluminuium

Cheers

trajkula