Can I draw on my otterbox with sharpie and it be permanent?

I just bought a new commuter otterbox for my iphone 5, and I want to draw a henna type design on the back so it's more personalized. Would sharpie be permanent? Would it smudge? What else could I use to make a permanent design on the hard plastic backing?

Even sharpie fades over time (especially on plastic)

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