Colours of Kell

[Dunadan]

Does anyone know what colours were used to paint Colour Sgt. Kell in the new IG codex(page 77)? It looks both grey and dark green, but I can't tell what was used as a base, and what was used to highlight. Has the 'Eavy Metal team done an article on him?

[archimbald]

no article as yet

[Dunadan]

Any idea as to the color? I'm beginning to think it's either catachan green or charadon granite...or both.