Diosytexas this is how i do metals:
For the armour Games Workshop Dwarf Bronze was used as a base coat after two thin layers of Bestial Brown (Games Workshop too), followed by a coat of Burned Umber oil straight from the tube. The excess was removed after a couple of hours using cotton buds. After it was dry for a couple of hours slightly dry brushed the whole armour with Vallejo Gold.
Hope this will help you mate