Meet Penny. Nice young lady, with copper skin that oxidizes to that cool greenish-white. She can induce electromagnetic vortices in metallic disks (*coughcough* coins) to produce assorted effects. Think Magneto, but limited.
Process was pretty simple; grabbed a pic from DevArt, slapped it into a greyscale alpha layer, added a texture map for the skin, colored skin, eyes, and hair highlights.