make it so that if you color the blood bag's blood a different color, it is that color. (e.g a blood bag with blue blood in it has blue blood coming out when damaged instead it being always red)
Idea: first person option. If you turn it on, you can see in the perspective of the ragdoll, and if you go up to really great heights when hit by a car, you can see space and UFOs.
Not possible tech-wise. All particles (= blood drops in this case) within a single system are identical due to the way the whole thing is set up.