Key word SOME. You are painting the picture that ALL Hebrews were mixed and looked like the people in that link you posted and was the makeup of all of ancient Israel. The pics were from the 1st century CE and you do know ancient Egypt and ancient Israel goes back thousands of years before that right? No different from African Americans mixed for centuries with other ethnic groups but theres no mistaking we are black. There definitely was some mixing yet all Hebrews werent down with the swirl like you are so convienced of.
In the book of Numbers, chapter 12 verse 1, Moses' sister and brother, Miriam and Aaron spoke out against him because he married an Ethiopian woman, (not because she was black skinned, but because she was of another culture. / Nation) their behavior angered Yah. Verse 10 says, He TURNED MIRIAM LEPROUS, WHITE AS SNOW. Once again if Miriam, who was a Hebrew, was white to begin with, what would have been the curse of turning a white-skinned person white?
And since you want to bring up Egypt...
The Ancient Greek historian Herodotus, who visited Egypt in the 5th century B.C.E., saw the Egyptians face-to-face and described them as black-skinned with woolly hair.
Anthropologist, Count Constatin de Volney (1727-1820), spoke about the race of the Egyptians that produced the Pharaohs. He later paid tribute to Herodotus' discovery when he said:
"The ancient Egyptians were true Negroes of the same type as all native born Africans. That being so, we can see how their blood mixed for several centuries with that of the Romans and Greeks, must have lost the intensity of it's original color, while retaining none the less the imprint of its original mold. We can even state as a general principle that the face (referring to The Sphinx) is a kind of monument able, in many cases, to attest to or shed light on historical evidence on the origins of the people."
The fact that the ancient Egyptians were black-skinned prompted Volney to make the following statement:
"What a subject for meditation, just think that the race of black men today our slaves and the object of our scorn, is the very race to which we owe our arts, science and even the use of our speech."