Fatuma Adar is thrilled to be offering a Black Out night for “She’s Not Special,” her upcoming show with music opening next week for a five-night run at the Tarragon Mainspace Theatre. In fact, she’s so excited about the special May 26 performance aimed at Black audiences that she’s recording that night for comedy album posterity. “First of all, these people (who criticized Black Out nights) don’t go to the theatre,” said Adar. And I think Black Out nights help with that. Adar, who jokes that as a Black Muslim woman she’s a “triple threat,” is encouraged by the kind of diversity she’s seeing onstage these days.