Anyone know anything in the army books or RPGs about the history of the Cult of Khaine?

I have a lot of leftover dark elf and high elf bits and was thinking about marrying them to make a set fresh post-Sundering Witch Elves.

I figure in the initial surge the priestesses and acolytes might still have their old high elf regalia but be starting to strip down figuratively and literally as they experiment with frenzy drugs and knives. A giddy rush of freedom and anarchy as the cult re-establishes itself along new lines.

Thoughts on what the models might look like are welcome