'Red' in the Bible

And another horse, fiery red, came out, and the one who rode it was granted permission to take peace from the earth, so that people would butcher one another, and he was given a huge sword.

Then I looked when the Lamb opened the sixth seal, and a huge earthquake took place; the sun became as black as sackcloth made of hair, and the full moon became blood red;

Now this is what the horses and their riders looked like in my vision: The riders had breastplates that were fiery red, dark blue, and sulfurous yellow in color. The heads of the horses looked like lions' heads, and fire, smoke, and sulfur came out of their mouths.

Then another sign appeared in heaven: a huge red dragon that had seven heads and ten horns, and on its heads were seven diadem crowns.