Corpse paint in metal music derives from King Diamond, who got it from Alice Cooper. Slayer, who were very influenced by Mercyful Fate in turn used paint during their Show No Mercy era. Sarcofago then emulates Slayer's image and this in turn inspires Mayhem, which causes all of Norway and all other Black Metal to follow suit. The end.
Of course at various stages bands have always claimed to have this or that as the real inspiration behind the corpse paint they wear, but any reasonable metal follower knows that that is simply an attempt to graft deeper meaning to something that originally just had shock/show value, similar to this....
Are there any suggestions from those that are familiar with the cultural significance of the art?