this is how I paint mine. this is by no means the best methode. i'm sure many people paint theirs differently.
I used the paint the white from a base of graveyard earth and several layers with increasing amounts of dheneb stone. It's quite labor intensive. Nowadays I just paint it dheneb stone, wash devlan mud, highlight dheneb stone.
I don't highlight the black on rank and file models but on characters I use a very fine highlight of chaos black-codex grey mix. Hope this helps.
I use blue for accent colour but red is most often associated with the counts of Ostland
ps: you can find different painting schemes and accent colours here
, just scroll down untill you see Ostland