SILVERTHORNE — When Adolfo Román García-Ramírez walks home in the evening from his shift at a grocery store in this central Colorado mountain town, sometimes he thinks back on his childhood in Nicaragua. Adults, he recollects, would scare the kids with tales of the “Mona Bruja,” or “Monkey Witch.” Step too far into the dark, they told him, and you might just get snatched up by the giant monstrous ...