For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
If am and Eve were the first two peoole as many claim then everyone on earth shares their genes, one race, one ethnicity, one gene pool!
Yahveh God made Adam from the soil of the earth. I pointed out, to my son, that soil comes in different colors, sometimes depending on how deep one digs. I showed him, that in our yard, we have black, red, various browns and white soil. Since Yahveh scooped up enough soil to form a man at least 5 to 6 feet tall and at least 18 inches thick, I would image Abba scooped up various colors of soil. As a result, Adam, then Eve, had it within their DNA to create various shades.
When I look at creation I see the colorful flowers, the different shades of so many colors. This leads me to believe that God loves color! So for me it only makes sense that he created mankind in different shades too. Nothing God created is just black and white! Alleluia, amen thank you God!