I'm looking to add some Obliterators to my Heresy era Emperor's Children but other than "most of their number were techmarines" I can't find any lead as to how I should paint them. Should I paint them in Pre-Heresy Emperor's Children colors with a Tech Marine shoulder pad? That said I couldn't find any Heresy era fluff about Tech Marines either. Did they have the same paint scheme in the "old days?" That being said if they were former Emperor's Children Techmarines would they technically be Dark Mechanicus and if so did they have a different paint scheme? Sorry for the barrage of questions but I'm looking for an accurate paintjob. Thanks!