For the Mona Lisa I created what I did was that I changed her color of her skin,hair,clothes, eyes and background. I also created a smiling mouth Mona Lisa so I did not have to trace the mouth but so I could change it.
I just colored the face of the girl, the dress and shoes, for the zombies i gave then a green skin and brown shirts. the hero has blue, red, and turquoise to him. The villain I just gave him colors that came to mind.