/cgl/ - Cosplay & EGL

I'm cosplay Cyborg Noodle and I'm having trouble picking out a wig..
Sometimes Noodles hair is purple, but in the video with the best reference for CyNoodle- her hair is more of a blue.
Of course it might just be the lighting and stuff but it's making me go crazy.

Hey /cgl/~! I'm thinking of doing a cyborg noodle cosplay for SacAnime, I know it's far away but I've never really planned things out well before for cons (I'm seriously finishing up a cosplay for Fanime, talk about last minute...) So I'm gonna try to be ahead of the game here. BUT ANYWAYS; How in the world would I do the bullet hole in her head? I've had a few ideas, but I'm not sure if they'd work, as I'm not too experienced with make up such as that. Any help?