Is there a Qur'anic explanation for the secret behind Allah creating people white and black?

Allah Almighty created Adam from a handful of dust gathered from all over the earth. Thus, the children of Adam came into being diverse in their colors, dispositions, and temperaments. Among them are the red, the black, and the white; and among them are the easygoing and the difficult, the good and the evil. This diversity indicates the immense power and dominion of Allah, and that all His creation is within His dominion and under His command and decree. He creates what He wills and chooses, and none of His creation has any choice in this matter. Allah Almighty says: (Indeed, His is the creation and the command; blessed be Allah, Lord of the worlds), and He says: (And your Lord creates what He wills and chooses; they have no choice. Exalted is Allah above what they associate with Him), and He says: (And among His signs is the creation of the heavens and the earth, and the diversity of your languages and your colors. Indeed in that are signs for those of knowledge). A believer must submit to Allah's wisdom and be content with what has become clear to him from His rulings, and entrust the knowledge of what is hidden from him to Allah.