I will tell you this. Race mixing in ancient Egypt probably did happen. It appears this became more prevalent after the Hyksos invasion. However from before the first dynasty up to late in the middle kingdom, Kemet (Egypt) was a Black African civilization. After this I’m positive the Black line remained in Egypt but the racist Egyptologist removed, confused, misplace and altered the face of Kemet (Egypt.) To what degree we may never know, but most African scholars (and some European) are positive that the "Black" line in some form remained up to the Ptolemys. But even then, keep in mind looking at Colin Powell, he is considered a “Black” man. Read deeply the influence of Qustul on Kemet or Egypt. Look at the names of the cities, they were not Arabic, they were African and had an African meaning and cosmology. This was all changed to conceal the African origins of civilization. Remember Egypt is in Africa and during that time, Europeans were not the Europeans we know today. In fact it was a "Black" world. I wasn’t joking about studying more in your library. Hotep.

FYI:
The effects of color on life must have been of great significance to early human beings, whose very existence was governed by light and darkness. Most living things appear to be vitalized by the bright reds, oranges, and yellows of daylight -- and calmed and rejuvenated by the blues, indigos, and violets of the night. For the ancients, the colors that make up sunlight were each considered to show a different aspect of the divine and to influence different qualities of life. Color is therefore an important feature in the symbolism of ancient cultures throughout the world, and the origins of healing with color in Western civilization can be traced back to the mythology of Ancient Egypt and Greece.-Color Therapy by Helen Graham