If you've snagged one of those Mango-packing Lumia 710s but were quietly wishing to add some colorful spice to it, Nokia's got something in the works for you. That's if, you live in the States, and can bust out a mighty proof of purchase. Once those credentials are in order, you'll need to head over to the promo site and pop in a bit of personal info along with the must-have IMEI digits. The Finnis
