In the show were his famous black paintings, which according to legend he painted because he was too poor to pay for other pigments. (ideelart.com)
A technique called surface - enhanced Raman spectroscopy — which uses laser light to make molecules vibrate in a way that betrays their identity — gave clues to other pigments in the paint. (sciencenews.org)
Black and white pigment should only be used with other pigment colors to lighten or darken them in the Old Fashioned Milk Paint Base or Untinted SafePaint. (earthpigments.com)