Coming in Smart Cover-matching hues, Incipio's Smart Feather for iPad mini ($35) shares the same general design as its larger counterpart. The plastic shell is designed to work in conjunction with Apple's magnetically attached lid, with a raised section of plastic along the left edge holding the spine securely in place. Incipio chose to skip button protection, though, and the plastic stops short of making it all the way to the the edge along the top…