בַּמֶּרְכָּבָ֥ה הָרִֽאשֹׁנָ֖ה סוּסִ֣ים אֲדֻמִּ֑ים וּבַמֶּרְכָּבָ֥ה הַשֵּׁנִ֖ית סוּסִ֥ים שְׁחֹרִֽים׃
En el primer carro había caballos bermejos, y el segundo carro caballos negros,
Rashi on Zechariah
red horses They were the ones that caused Babylon to mount, for [Babylon] is red, as it is written (Dan. 2:38): “You are the head of gold” [gold having a red tinge].
Rashi on Zechariah
black [Horses,] to cause Media to mount, for they blackened the faces of Israel in the days of Haman.