'Red' in the Bible

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).