Of course the official title is different . The documentary by Jan Vrijman from 1961 is called ” De werkelijkheid van Karel Appel”, but most people from the generation of Karel Appel know these famous words ….”ik rotzooi maar wat aan”, but reality is his painting is far from intuitive and improvisation. Many of his complex paintings were thought out and prepared on paper and i suspect that even the painting Appel is executing in the documentary is prepared and worked out on paper before he paints the canvas.
Appel is a great artist and certainly one of the most important ones in the Netherlands from the last century. His painting is the summit in abstract expressionism and he deservedly earned his place among the worlds greatest artist.
http://www.ftn-books.com has a large collection of Karel Appel books available