Milosh -
I was actually going to have a bit of a go at these metallics. Good for small, smooth surfaces, not as good for large, less than mirror finish surfaces.
The base is GWs Warplock Bronze, a light washing of GW Nuln Oil, a mid of GW Runelord Brass, and then a final light highlight of GW Mithril Silver.
Sorry for the poor pics - but I'm not taking my light tent to work too LOL