Iraqi-born Colorado artist Halim Alkarim is a true virtuoso. He's done gorgeous abstract paintings, stunning installations and, for his Robischon solo, The Witness Archive, hauntingly beautiful portraits in lambda prints on aluminum that are imbued with political content. The son of a critic of Saddam Hussein, Alkarim and his family (including his brother Sami, another gifted Colorado artist) suffered under the regime until they escaped to the United States a few years ago. Although the works in The Witness Archive were based on photos of real people, the resulting pieces look more like examples of digital animation. This is because Alkarim put his models in elaborate latex masks and took the photos using scrims — then retouched the resulting shots. As befits the show's title, these pieces all resonate with the piercing, unblinking eyes of the sitters.