Not necessarily true. All humans (Everyone with two legs) have a single ancestor 100k years ago, yet I'm pretty sure humans with two legs are older than that.

>All humans (Everyone with two legs) have a single ancestor 100k years ago

There was a black American that died in South Carolina somewhat recently that gained his Y chromosome from a man older than the common ancestor of most men, Y-Adam.

>Perry did not descend from the genetic Adam. In fact, his Y chromosome was so distinct that his male lineage probably separated from all others about 338,000 years ago [0]

[0] https://www.newscientist.com/article/dn23240-the-father-of-a...

I believe you, they are calculated from statistics after all. It's difficult to claim 100%.

On the other hand, he died so...

It reads to me as definitive according to the research so far, though the one sentence about green raises questions about rarer colors than blue, speculatively the other colors are polygenic.