'Black' in the Bible

“Now what are you doing by going to Egypt [in search of an ally],To drink the [muddy] waters of the Nile?Or what are you doing by going to Assyria [in search of an ally],To drink the [muddy] waters of the Euphrates?

For this shall the earth mourn, and the heavens above be black: because I have spoken it, I have purposed it, and will not repent, neither will I turn back from it.

For the hurt of the daughter of my people am I hurt; I am black; astonishment hath taken hold on me.

Give glory to the Lord your God, before he makes it dark, and before your feet are slipping on the dark mountains, and, while you are looking for a light, he makes it into deep dark, into black night.

Judah mourneth, and the gates thereof languish; they are black unto the ground; and the cry of Jerusalem is gone up.