'Red' in the Bible

But He replied to them, “When it is evening, you say, ‘It will be fair weather, for the sky is red.’

And in the morning, ‘It will be stormy today, for the sky is red and has a threatening look.’ You know how to interpret the appearance of the sky, but cannot interpret the signs of the times?

This man led them out [of Egypt] after performing wonders and signs in the land of Egypt and at the Red Sea and in the wilderness for forty years.

For I do not want you to be unaware, believers, that our fathers were all under the cloud [in which God’s presence went before them] and they all passed [miraculously and safely] through the [Red] Sea;

By faith the people [of Israel] crossed the Red Sea as though they were passing through dry land; but when the Egyptians attempted it they were drowned.

And another, a fiery red horse [of bloodshed], came out; and its rider was empowered to take peace from the earth, so that men would slaughter one another; and a great sword [of war and violent death] was given to him.

And this is how I saw the horses and their riders in my vision: the riders had breastplates [the color] of fire and of hyacinth (sapphire blue) and of brimstone (yellow); and the heads of the horses looked like the heads of lions; and from out of their mouths came fire and smoke and brimstone (burning sulfur).