'Blackness' in the Bible

In the twilight -- in the evening of day, In the darkness of night and blackness.

Whoso is vilifying his father and his mother, Extinguished is his lamp in blackness of darkness.

I clothe the heavens with blackness, And sackcloth I make their covering.

Darker than blackness hath been their visage, They have not been known in out-places, Cleaved hath their skin unto their bone, It hath withered -- it hath been as wood.