Jazz (1947) is a book of about one hundred prints based on paper cutouts by Henri Matisse. So it is not one picture, nor is it a painting.
Matisse was a guy
did matisse paint with only oils
Pointillism was new and exciting. Matisse did not use it for long.
Derain was a trusted colleague of Matisse, who also painted a portrait of Matisse. Why should they not?
In Paris.
Because they are colorful.
It is a paper cut-out with gouache color.
In all of Matisse' paintings he never painted still life.
To paint pictures.
Gouache
Not until he died in 1954.
In 1937 Lydia Delectorskaya posed for Matisse in a purple robe. At the time Matisse had no intention to paint a portrait that looked like a photograph. When accused of painting unrealistic images of women Matisse explained, "I do not create a woman, I make a picture." He readily admitted that his images were not faithful re-creations of reality. * http://www.mystudios.com/art/modern/matisse/matisse-purple-robes.html