Anyone with even a passing interest in Latin American art and culture will be familiar with Diego Rivera, the Mexican painter and muralist. Rivera, who is credited with being one of the founders of the Mexican muralist art movement, was also an active communist and husband of the equally famous Mexican artist Frida Kahlo.
Between 1922 and 1953, Rivera painted murals in Mexico City, Chapingo and Cuernavaca here in Mexico, as well as in San Francisco, Detroit and New York City. Mexico City's Palacio Nacional, or National Palace, is home to some of the paintings that Rivera did under government commission, and those works are currently the focus of a restoration project by the government.
Diligent specialists are touching up missing color with watercolor paints, and using a weak alcohol solution to wash away dust and grime that the murals have collected. The restoration is expected to be completed in September.
link: Mexico's Diego Rivera murals get restoration treatment | La Plaza | Los Angeles Times