When the idea first came out (idea of altering your appearance greatly by change of skin color, hair, eyes) it was shunned by many but the younger generation loved it and it became fad that has grown to be normal.......
The new race are know known as The Altered children.
Genetic mutation clinics that can alter your genetic code to change pigment of skin, hair, add appendages or other things like horns, animal ears/legs. Can alter eyes as well patterns in eyes, weird colors. If wanted Physical body can stay young looking while you age. (costs a lot but many have AND it can be passed down through genes)
Some can have No gender, or can switch it.
Since it altered the DNA, when altered children reproduce they make another (different) altered child.
Altered gene is strong so even when one mates with a human the child becomes altered.
"KKK" like humans who are left hate altered and randomly kill them.