It shows literally nothing.

Anyway, let me school you some more to dismiss these nigger allegations; All space marines have the ability to tan rapidly to protect against radiation and then revert back. However, due to a defect in their geneseed that interacts with the environment of their chapter world, Nocturne - a hellish Death World full of volcanoes and fire breathing lizard - this transformation is permanent for Salamanders. This is why their skin is greyish.

We all agreed that race is more than just a skin color, did we not?Fuck outta here with your basicfag 'dArK SkIn MeAns NiGger' rhetoric.