Firstly I'm priming in Halfords grey primer (ensure you shake it and try spraying on a bit of cardboard as sometimes it can go grainy and wreck out detail). I then did a liberal brush coat of the P3 Exile Blue, avoiding the head, shoulder guard trim and some of the details.
Once dry I did a heavy wash with GW Drakenhof Nightshade.
You can see how much depth the wash adds to the detail which will make the over painting in Kantor Blue a lot easier to do.
Next step with these guys is to do the metal work, for the infantry it'll be Leadbelcher, washed with Agrax Earthshade and then highlighted with Necron Compound but for the consul I'm not sure whether to go gold for the metal trims or not (please post your recommendations below).