It's a bummer that there just were not enough points to squeeze in these Ministorum Priests and Astropaths. That would have been very fun... potentially plaid robes on these guys! :-)
Right now, they are in the colors of my original much loved Demonhunters army. You can see a number of posts in that section of the blog to show how these worked in my various retinues.
In fact, they still have their coded bases, which let everyone know what they were meant to be.
Since it could have gotten very confusing, each base was labeled with the words Mystic, Sage, Acolyte and so on.
This made it clear for both players, and it was a nice decorative element on the marble bases!
He is also here: