Scroll all the way down past the eye colours [Outline Color Override] to where it says [Balls Info]
This shows the babyz different body parts. The game colour # for White Babyz is 45. Therefore change all the 45's (bordered in blue) to your desired skin colour
Do this for the whole of the body part section until you come to the new Rez.
Now Ubisoft decided to be silly and put two sides of the nose in a completely different section. So scroll right back up to the beginning of the Rez and look for a part that says extra transparent nose balls for freckles- and once again change the two 45's to whatever colour you want.
We're all done :D