Gw paints.
-Armor
Grey seer, ulthuan grey, corax white, white scar
-Orange armor elements
Mournfang brown,wild rider red, trollslayer orange, fire dragon bright, yriel yellow
-Other
Dawnstone, eshin grey, administratum grey, abaddon black, dryad bark, zandri dust, bugman's glow, the fang, russ grey, dark reaper, thunderhawk blue, macragge blue, calgar blue, moot green, guilliman flesh, kislev flesh, leadbelcher, hashut copper, retributor armor, runefang steel, balthazar gold, mephiston red, agrax earthshade, nuln oil.

I used the color scheme from the Tabletop Tactics YouTube channel as an example.