What is Matisse’s purpose for his use of color? Please write a comparison for th

What is Matisse’s purpose for his use of color? Please write a comparison for these two paintings. and answer this question.
Henri Matisse, The Red Room, 1908-09.
Edgar Degas, The Rehearsal, 1874.
Think about the formal qualities. How is the use of color/light different? How is the space different? How do the artists want audience’s gaze travel differently? Any difference in composition, in foreground and background?