Is the RT era the time of the Arstartes legions, before the heresy of Horus? That would explain the lack of eagles..
Indeed it is.
Unfortunately i dont have those transfers and painting is most definitely not my strong suit...might be interesting...
Perhaps if you ask around people will send them, or do a bits swap or something. I'm pretty sure I've got a whole load of them - you don't have any spare plasma cannons by any chance do you?
What colour grey do you think would be good?
Erm, a mid grey.
Sorry, I'm not too hot on all the GW colours as I tend to mix many colours including grey, and use vallejo a lot too.
What would you think the ABSOLUTE EASIEST way to do these would be?
Well, aside from just painting them blue...
Blue over a black undercoat, leaving black in the recesses, followed by a lighter blue highlight on the edges of the plates.
Grey/metal over the pipes and gun leaving black in the recesses.
White the studs, white reflection on the eyes, add transfers, base it, varnish it and you're done.