The eight Flintloque metal miniatures were first spray painted with Tamiya grey primer then sprayed with Anthracite - an acrylic craft spray paint bought from Hobbycraft. Over the last few years I have found that I prefer painting my Orc skin tones over dark brown rather than pure black (or anthracite which is a very dark grey). I brush painted dark brown (mixed from Chocolate Brown and Black) onto the 'flesh' areas with an old brush. In the image below, you can clearly see the effect.
Hopefully I can get some actual colour onto the eight Orcs soon.