How to create colors with outlines

This is Lolly Poppings. She live in Czech Republic and are though. Czech’s are analytic, prize friendship and drink the most beer. Freestyle create outlines on the mesh. You see the outlines in render. However the outlines isn’t assigned to vertex paint color. How do i create outlines assigned to the dark red parts? How do i create the outlines the reference has in the mesh?


See the other pictures too.https://www.artstation.com/artwork/mAOJzy
https://www.artstation.com/artwork/98BGNv