TWIN PEAKS — Patrick Carney’s mother, Edith, always embraced his taste for the extravagant. That includes the tarps he and a dozen friends purchased from Home Depot on a shoestring budget in 1995, painted “Mardi Gras pink” and installed on Twin Peaks on a dark June night. He’s stepped up as the annual event organizer ever since, inspired by the legacy that started with a light-hearted renegade (and technically illegal) craft project to add a DIY pop of color to San Francisco’s Pride. “A pink triangle went up, rather than a rainbow flag – there are plenty of those in...