Melanochrome

MELANOCHROME - Deleted in 5th edition

The MELANOCHROME is one of the 19 organs that are implanted into a Space Marine inductee to produce a Battle Brother.

This implant controls the amount of melanin in a Marine's skin. Exposure to high levels of sunlight will result in the Marine's skin darkening to compensate. It also protects the Marine from other forms of radiation. Different levels of radiation cause variations of skin color in different chapters. This can be related to the pale skin of Blood Angels and their successors and the dark black skin and red eyes of the Salamanders.