Vampire Skin tones tends to be pale if taken down the classical route, however Vampires do best when hiding in plain sight so usually I wouldn't bother with a paler shade.
Rakarth Flesh is an odd colour...it's like a very light clay colour so not really grey, but not really an earthy colour either, I'm not sure on the Vallejo alternative but we have a 1:1 match on our
Pale Grey
Pallid wych flesh is a very light pink tone, We have one even paler called
Pale Flesh, it has a very subtle hint of pink in it
In regards to the chitin, Red and Black is pretty fitting if you want to go classical vampire, for more modern day vampires I would go with dark brown and black to go with the whole "Blend in with the Shadows" type look