Revelation 16:3 The second angel poured out his bowl into the sea, and it became blood like that of a dead man; and every living thing in the sea died. From Yahoo! Answers: What color is the blood of a died man? I’m doing a little research and I want to know what the color the blood of a died man has. sense it rots would it be black? The colour of oxygenated blood is shiny red but after the death of a person oxygen supply will be stopped resulting de oxygenation of blood causing the colour changed to darker red and later on it will turn into brown and then black because of the absence of oxygen and due to decay. Is the oil spill in the bible? Yes it is: