Mine are all GW colours
Dark Angels green for the shoulder pads, helmet, knee pads, gauntlets and boots.
Catachan green for the sleeves and under armour fabric bits legs.
Bolt gun metal for drybrush.
Mortia is black with a catachan green top piece and drybrushed bolt gun silver again.
Flesh i use elf flesh and some thined flesh wash.
Simple but in line with my painting skill level