(Plinio Lepri | AP Photo) In this Dec. 10, 1999, file photo, the "La Creazione" (The Creation) fresco by Michelangelo on the ceiling of the Vatican's Sistine Chapel is pictured. Beginning with Michelangelo on the ceiling nearly 20 years ago and wrapping up with Botticelli on the sidewalls, restorers have brightened all the masterpieces in the Sistine Chapel, promising the returned-to-life colors should keep for decades, maybe even a century or more.