Gilded Armour
I undercoated in black. Next I dampbrushed / over brushed with a dark silver shade (Citadel boltgun metal or whatever it is called now), leaving black in the recesses. Next, paint an antique gold shade over the silver. Next a dark wash (Citadel Agrax Earthshade for Gold or Nuln Oil and for gunmetal with Gold highlights). Finally a dry brush of bright Gold (was called Shining Gold - I think it is now called Auric Armour Gold).