There is also a bit of Devlan Mud mixed with Brown Ink in the shading. Then there are a few coats of Gryphonne Sepia over the gold (Burnished Gold - GW) and for the metal used Chainmail (GW) rather than Bolter (GW) to give a different feel from the metals on the Mangler.
And having named all of the colours used - yep, all the GW names will be different soon enough. Hey.
Lastly the picture -