This charming old man with a bright red suit and full white beard reminds me of a storybook character come to life. He is sitting in a chair with a plate of cookies and a glass of milk, holding a book and engrossed in its contents. To color the page, I would make the old man’s suit a bright cherry red, the color of the holiday season. His white beard can be given a slight wash of cream or yellow to give it an aged look. The book should stand out from the page, so I would make it a deep, almost glowing blue or green, with a warm yellow for the pages. The plate of cookies could be given a golden appearance to add contrast and warmth to the illustration. And the glass of milk? I would give it a clear glass appearance and leave it uncolored so it stands out from the background.