There’s a pleasing ease and sensuousness to “Trinket,” Kapwani Kiwanga’s exhibition at the Canadian Pavilion at this year’s Venice Biennale. That comes from not only its primary materials—millions of tiny glass beads, made on the nearby island of Murano (where glass has been produced for at least six centuries) and then strung into sweeping curtains lining the structure—but also its soothing arrangement of colors that shift from gradient to imperceptible depending on your vantage point: pale yellow, sunset orange, white, maroon, and the rare, prized cobalt draped across the building’s exterior, quivering with the breeze off the Venetian Lagoon.