You will need to use Save Editor (Project CyberCAT-Simple GUI).

There are several different kinds of mods you can install to customize V. You can change a lot of elements from her skin color to her outfits. With this, you can change her eyes, nail design, body tattoos, makeup, and even add freckles. You can also modify her hair color.

It is also possible to give her new outfits, including a body suit with a gun harness, Panam's pants, a symmetrical alt jacket, and more.

It is very simple and easy to install.