Over the past decade, Gen Z has helped to transform thrifting into a $28 billion-dollar industry — one that’s as subversive as it is stylish, fighting consumer culture with upcycled fashion and sustainable, eclectic one-of-a-kind pieces. Denver has cashed in on the recycled-clothing wave, establishing itself as a thrift mecca with handfuls of locally owned shops — including Westword’s top ten picks — whose offerings range from vintage Western to Y2K heaven. No one knows the value of the Colorado thrift scene better than Arc marketing director and Get Thrifty podcast host Maggie Scivicque…