'Black' in the Bible

You may not take an oath by your head, because you are not able to make one hair white or black.

You have not come to a mountain which may be touched, and is burning with fire, and to a black cloud, and a dark smoke, and a violent wind,

And when the third stamp was undone, the voice of the third beast came to my ears, saying, Come and see. And I saw a black horse; and he who was seated on it had scales in his hand.

And I saw when the sixth stamp was undone, and there was a great earth-shock; and the sun became black as haircloth, and all the moon became as blood;