I sure can.
Basically I spray them black. Then I spray them white. (I've found with gw undercoat sprays, the white sticks better and has a way more even distribution if you spray the black first).
Everything that will end up yellow or bone gets an application of seraphim sepia (a sepia colored shade/wash, obviously). I will then liberally drybrush this back to white. This is to get the shade in, but not make it too harsh or dark. Everything that needs to be yellow then gets a coat of lamenter yellow (a glaze).
All the parts that go blue then get painted black first, then... what is it? Macragge blue? used to be mordian blue. Then I'll mix some old ice blue (no idea what the color is now) with plenty of glazing medium (I got vallejo's, but I'm sure now that GW has brought it out, that works too) and apply that to where I want a blue highlight. I clean up my brush, and 'draw it out', as it were, to make a more smooth transition between the dark and light blue. This also gets the ghostly or ethereal quality that it seems to have.
Anything that's black gets painted black, obviously. Highlighted with a bit of hawk turqoise (again, no idea what the current name for that color is), which I also apply on gems, the bases, and on any area that needs to look as if it's alight (such as the muzzle of the d-scythes). I also use this color for the blades, where I sometimes apply a bit of white as well to make the transition a bit smoother.
I hope this answers your question. It's a rather simple scheme, and I like it that way. I spend more time building than painting most models.
update for everyone else: Currently I'm working on the hands of my wraithknight (as those hyper-extended fingers aren't what I want), after that it's building the shoulder-mounted secondary weapons and prettying up the base, figuring out what I want with her lower back and perhaps adding in some of the wraithlord's banners and things. The model on its own would be the only one without any form of cloth on it, and I thought that'd be weird.
anyway, pictures to come soon!