View attachment 2597931
Fiddling around with Impcat in lieu of putting some resin in the 3d printer and printing a test custodes to paint.
It occurs to me that the Custodes lore is very explicit that they painted their armor black in shame after the events of the Siege of Terra, and thus a glorious golden banana boy isn't quite right.
So this is my take on black Custodes, although impcat is FAR brighter than the results would be on plastic. Black primer then German Grey by Vallejo armor, with Doombull Brown Leather, Khorne Red topknot, Morghast Bone pauldrons, and Iron Warriors metallic for the metal bits including the filigree. Nuln Oil on EVERYTHING (except the pauldrons, they get Seraphim Sepia), no layers, no highlights -- just base coat on top of the primer then shades. Gems will be painted as standard -- Stormhost Silver then a gem technical paint, probably green. The blades will probably be given a iridescent shifter paint (blue to purple maybe), either over black or over metallic (which gives a very subtle and odd effect, where the shifter paint only is visible on the "horizon" of the blade).
Probably give the faceplate some other color to break it up -- probably more iron warriors, I'm thinking.