Never liked that with the Hoxton Housewarming update, when all the skulls were retextured they had their eyes filled in with yellow.
As well as the nose and gap between the jaws had also been filled with yellow.
This mod fixes that. Applying bright materials will not make the black areas go 'bright' or grey.
Normal, Hard, V.Hard, Overkill, Mayhem, Death Wish and One Down skulls have had their dark eyes, noses and jaws restored, based off the original, now dummied out textures still in the files from before the Hoxton Housewarming update.
An Optional folder includes a white version of these skulls.