Revelation 6:2-6

I looked, and behold, a white horse, and its rider had a bow; and a crown was given to him, and he went out conquering and to conquer.

Revelation 12:3

Then another sign appeared in heaven: and behold, a great red dragon with seven heads and ten horns, and on his heads were seven diadems.

Revelation 17:3

And he carried me away in the Spirit into a wilderness, and I saw a woman sitting on a scarlet beast which was full of blasphemous names, and it had seven heads and ten horns.

Treasury of Scripture Knowledge

Summary

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

Bible References

Red

Revelation 6:2
I looked, and behold, a white horse, and its rider had a bow; and a crown was given to him, and he went out conquering and to conquer.
Revelation 12:3
Then another sign appeared in heaven: and behold, a great red dragon with seven heads and ten horns, and on his heads were seven diadems.
Revelation 17:3
And he carried me away in the Spirit into a wilderness, and I saw a woman sitting on a scarlet beast which was full of blasphemous names, and it had seven heads and ten horns.

Black

Revelation 6:5
When he opened the third seal, I heard the third living creature say, "Come." And I looked, and behold, a black horse; and its rider had a pair of scales in his hand.