Overall, I aimed to do models that can be used as both loyalistts and traitors for maximum flexibility. That's why there isn't much iconography or faction specific colours on them. The Warlords are the only ones to "show their allegiance".
These are my traitors and they share the colour scheme of my epic chaos army.
And here are my loyalists. Their colours don't match with any imperial forces I have, but I painted the Reaver blue this summer so I kept with the theme.
Now I think I just need some knights to complete the set for AT. For Team Purple I have some Slaanesh Knights already painted up, but I need to find a couple of knight models for Team Blue before I can do them.