Chris Coleman has already shown audiences what’s he made of with triumphs such as his all-black recasting of “Oklahoma!” And he’s tested Denver’s appetite for new work with plays sourced from the Colorado New Play Summit. But the former director of Portland (Ore.) Center Stage, who’s readying his third season as artistic director of the Denver Center for the Performing Arts (DCPA) Theatre Company, also knows the value of attention-getting names — even if he has to be reminded of their prominence. “I did not know who The Lumineers were at first, as shocking as that sounds,” Coleman quipped last week.