I've seen couple of great looks lately, inspired by Mystique from X-men:
I wanted to see if I could do the look, and I think I did quite well!
I used Mehron's 3D Gel and few drops of lash glue to create the texture on the skin, MUFE blue grease paint, TheSheSpace Twisted Psychic pigment for the color of the skin and black and silver from MUFE Flash palette to bring more edge to the textures.
Here's some pics of the making process:
And the final result: