Thank you very much for the feedback. I decided to follow it and only went with white where the medicae emblems are (right shoulder, helmet, round part of back pack) and the apron. I will probably add a little blood to the apron seeing as he has just removed the gene seed and is inspecting it.
P.S. I had a bit too much wine so I also decided to Reaper my Chaplain. It came out better than I thought as I don't have the best of modeling skills. I was also a little worried that the arm position wouldn't be as good as I thought it was last night when I decided to alter the model after I had just built it. However, I think it looks okay and would have required a lot more effort than simply rotating it at the shoulder joint to make it look better.