> only within the last 300,000 approx.

Pale skin emerged in a similar time frame. However, going that far back you're talking mostly about pre-human species. More importantly, you're talking about pre-human species that didn't live outside of temperate zones.

If cold = pale skin, then how did pale skin emerge hundreds of thousands of years before settlement of cold regions?

> Bergman’s rule and Allen’s rule are the two guiding rule for my statements.

I believe you're misusing them. They're intended for discussions of speciation, not minor variations within a single species.

> Climatic adaptation and hominid evolution: the thermoregulation imperative.

Your original point was about modern human beings and the variations we see, not about pre-human species that evolved into humans.