For ten points, name this French Post-Impressionist, creator of The Red Room, The Joy of Life, and the series La Danse and The Blue Nude.
This artist convinced Segei Shchukin to let him alter the color scheme of one of his works before it was purchased. His Seated Riffian shows the title character in a green shadow, while Green Stripe shows his wife in a Japanese hairstyle. Many of his works from the early twentieth century feature a motif of five nude forms holding hands and dancing in a circle. For ten points, name this French Post-Impressionist, creator of The Red Room, The Joy of Life, and the series La Danse and The Blue Nude.
This artist convinced Segei Shchukin to let him alter the color scheme of one of his works before it was purchased.
Henri-Émile-Benoît {Matisse}