Nails. I just did this, but with a soft pink shade and I love it! It gives you the glitter without going crazy all over the nail. I still feel professional and 'grown up' while still being able to have my pink and glitter. :)
If you just want it all — and that includes arrow-shaped metal, quirky designs like moons and stars, and flat, simple bands — make sure you stay with the same colour scheme. Keep your shapes up top and more standard bands at the bottom.
I'm trying to achieve this but backwards and mostly by accident. I'm thinking of using a brass banisher treatment to combat the copper streaks of blond that are shining through my fading blue black. I really don't want to bleach my hair until the black grows out, so for now I'll just have semi natural highlights poking through.