Fifties painter Mark Rothko, known for his large solid swaths of color, once claimed to have no real interest in the color itself or whatever form it took, only in expressing simple human emotions. In a similar sense, Colouring is the culmination of several sonic hues—instrumental and electronic, pop and underground, heart and body—but the aim is all feeling. London's Jack Kenworthy imbues his work with a wide-eyed relatability, whether he's exploring elation...