From his new home, a 1971-built structure near Ken Caryl Road in unincorporated Jefferson County, Nathaniel Rateliff has an enviable view of Colorado’s natural wonders. As with everything great in his life, it’s tempered. “I’ll be standing out there, just south of Red Rocks in those canyons, and I’ll say, ‘It’s beautiful out here!’ ” the 41-year-old musician said last month from his manager’s office in Denver.