'Red' in the Bible

Now you have knowledge of what Joab, the son of Zeruiah, did to me, and to the two captains of the army of Israel, Abner, the son of Ner, and Amasa, the son of Jether, whom he put to death, taking payment for the blood of war in time of peace, and making the band of my clothing and the shoes on my feet red with the blood of one put to death without cause.

And King Solomon made a sea-force of ships in Ezion-geber, by Eloth, on the Red Sea, in the land of Edom.