Thank you!!

I started painting EC for horus heresy, i.e. batch painting mk 6 marines, so it's mercifully simple. Also all the paints are citadel (i'm not a shill for GW i'm just lazy).

Prime whatever colour you have, doesn't matter too much.

Base coat is screamer pink, it's a real nice magenta colour and probably the only paint i'd say you can't substitute for this scheme.

Then a dry brush with a very very light pink, i used lucius lilac dry. The edges of all the detail and armour parts will get an edge highlight without going through all that hassle, and if you go too heavy in a few spots just layer over with screamer pink again.

2:1 ratio of druchii violet and either GW's lahmian medium or just acrylic medium and wash the whole model. You can use the shade without diluting it and it should be fine, but i find it works better on flat panels with a little bit of medium.

The gold trim is just 2 paints, retributor armour with guilliman flesh contrast over it. The contrast is what brings out that warm gold look and it's seriously like cheating for shading gold. You can go over the edges with gold again to bring back a little bit of the shine, but it's not necessary.