Ah I see, thank you all.
The reason I opted for black is because I'm not overly fond of metallic paints. On a gun, maybe, but not on the armor.
I've been keeping my eyes peeled how unpainted metal/iron looks and I'm somewhat confident I can go NNM on their armor.
My
CSM book arrived yesterday so I'll read up on lore and rules. Wednesday I'm going painting with friends again, I'll pick their minds also.
After some googling yetserday I found that hazard striping are in
40k since a very long time and people either hate it or love it.
I've been keeping my eyes peeled for dulled iron and am somewhat confident I can airbrush that NNM on the models. I'll airbrush some spoons first to see what I can reproduce.
Iron Warriors have a rather dull colourscheme and I feel the striping adds a splash of colour and visual interest.
(and also I'm getting crash test dummies vibes from them