The bald and blue trio is back to mock, mimic, dissect, ascend and invite the audience to participate in megastardom. The Blue Man Group’s “How to Be a Megastar Tour 2.1” uses gumballs, satire, choreographed dance, song and, of course, paint to recreate U2 performances, “The O’Reilly Factor” and Beyoncé’s “Crazy in Love.” Somehow, audience members are able to keep up with this, even when they’re pulled onstage. The show is Friday, March 21, at the Richmond Coliseum at 8 p.m. $46-$76. 780-4970.