Coon described Julius Caesar as having looks more at home in the North (he was referring to North of the Italian peninsula, not Northern Europe like Sweden), and I agree.
His strong features are clearly reminiscent of Germany. He's clearly of somewhat of a Dinaric strain too, but that also spreads well into Germany. Southern Germany is where this combination of Faelid-like and Dinaric-like features best coexist - it is reminiscent of the Rheinish Bell Beakers (best described as of the Norid phenotype).
As for my point in pigmentation, do you doubt that Augustus was blonde? Because he was literally described by contemporaries (the Romans could write!) as blonde, and if I'm not mistaken statues of him show traces of yellow pigment for his hair.
In fact, I was very conservative in what I said - see here:
https://www.theapricity.com/earlson/history/emperors.htm
Do you also doubt the early Latins would have been relatively light pigmented?
As regarding my point about the stock of the Roman Emperors being subject to change: I'm sure, being as well versed in history as you seem to be Angela, that you know of Philip the Arab, right? It wouldn't be like you to hastily jump to conclusions...