This thread has go far off from its initial starting point LOL
RSW has pointed some interesting proposition on what is the meanings of "Black Mud" / "Salsalin".
Fact wise; Carbon is the second most abundant element after Oxygen within Homo Sapiens body.
There you go
"Black Mud" = CARBON
"Nafs" = Oxygen..
I don't care whatever the "Bassara" (and no "Adam" are being mentioned in that verse) which being 'created' with basic material of Black Mud and Nafs and altered / modeled further are actually black-skinned, white-skinned, yellowish-skinned or purple-skinned..LOL
And it's irrelevant, as 'skin colour' requires only slight modification to the 'model' of the species (less than 0.0001% of DNA strain) which controls the melanin production.
In 'modern' understanding, the verse could be understood as
God designed homo sapiens to be a being/creation with basic materials of carbon and oxygen, and it's being modeled through a series of acids called DNA. The species are designed with capabilities to evolves over time through modifications of its DNA.
Revelation from GOD doesn't ends with Quran, revelation is a continuing progress up until now and beyond..
Salam / Peace