PCS:NPC bodies turn green when they die
From TESCOSI --A site dedicated to mod users
NPC's bodies are turning green when they die.
Causes and Solutions
Cause 1 - MMM
This anomaly occurs when the MMM BSA is not loading.
Solution #1: See the "Real" Examples subsection of Loading BSAs.
Martigen's Monster Mod
Bethesda Softworks Archive