Designer David Frazier infused personality in this Denver condo. Case in point: A vintage ram’s head (christened “Frazier” by the owners) greets guests in the hall. The piece hangs above a chair by William Katavolos. An Arrow light fixture by Apparatus, a pair of white Lee Industries chairs, a leather Børge Mogensen armchair and a John Dickinson occasional table are glimpsed in the living room beyond.