'Red' in the Bible

I saw by night, and behold a man riding upon a red horse, and he stood among the myrtle trees that were in the bottom; and behind him were there red horses, speckled, and white.

In the first chariot were red horses; and in the second chariot black horses;

And the red ones go to the east; and they made request that they might go up and down through the earth: and he said, Go up and down through the earth. So they went up and down through the earth.

“And they will pass through the sea of distress and anxiety [with the Lord leading His people, as at the Red Sea]And He will strike the waves in the sea,So that all the depths of the Nile will dry up;And the pride of Assyria will be brought downAnd the scepter [of the taskmasters] of Egypt will pass away.