Green Screen
So I'm making a music video for a friend's EP and we rented out a green screen and did some shots with our actor. We added green veins along his body with paint from a makeup artist in advance but now I'm struggling to figure out how I can change the color of the veins on the body after I keyed him out using key light. I was just wondering how would I go about compositing the veins from black and changing the colors to say purple and have it blend nicely and look authentic. I also wanted them to grow gradually throughout the scene. We also added more veins per each scene to make it seem like more were growing. Here are some screen shots to help get a better understanding of what I'm talking about. Any advice/ suggestions would be greatly appreciated.


