💚Did the Buddha cover colorblindness in his teachings?

Is "[Racial color blindness](https://en.wikipedia.org/wiki/Racial_color_blindness) " covered in the Buddha's teaching? What would be the closest Buddhist concept that covers it? Is there a scripture that teaches colorblindness? Could it have originated from the Buddha's teaching, Christianity, both or somewhere else? Does anyone know what Thích Nhất Hạnh taught MLK about colorblindness?