I think that is due to poor lighting at my parents house, they are actually a sick shade of green. Once I pick all my models up from their place I will go through my gallery and repaint or re-photograph all the models I am unhappy with Thanks!
Well, I think you'll like the new Chaos Legions codex, due out in the next few months, then. It reintroduces rules for cultists, and rumour has it that there'll be an option to turn them into plague zombies, too.
Nothing wrong with beastmen in 40K, they were there in 1st edition as part of the imperial guard armies like Ogryns and Ratlings (Not quite sure how as in fantasy they're predominantly chaos ) Awesome models nontheless.