Update: Now with new skins for the Egyptian infantry units (they have less body armor now, as did the historical Egyptian warriors)!
This simple modpack reskins the Egyptian units in Age of Mythology to have a browner hue, more like the medium-brown skin tone the Ancient Egyptians gave themselves in their artwork. Although the changes are small (even though a lot of them had to be made), I think it makes the Egyptian units look at least slightly more accurate.
This mod was made with just vanilla AOM, but should work for both AOM and TT. Be warned, I have not tested it on multiplayer yet, so it may not work.