Museum of Modern and Contemporary Art in Nice, France has several works of Yves Klein.
wiki says: "was a French artist considered an important figure in post-war European art. He is the leading member of the French artistic movement of Nouveau réalisme founded in 1960 by the art critic Pierre Restany. Klein was a pioneer in the development of Performance art, and is seen as an inspiration to and as a forerunner of Minimal art, as well as Pop art.”
these two paintings are part of the Anthropométries series… take a look at how the paintings were created…
other artist from the same museum: Niki de Saint Phalle