You'd think by now I would have gone on a shooting spree... (unlike some people I can handle video game violence [some what]). I did this when I was maybe 10-14 years old. Mortal Kombat changed the way I played with my GI Joes for ever...
I used crayola markers to draw the blood on the figures, then I took tissue paper and glued it to the limbs and colored that red too.