In the video, a person is seen using a marker to add color to a painting of a tree. The tree is painted with a variety of colors, including red, blue, and green. The person's hand is visible as they add details to the tree, making it more vibrant and colorful. The painting is placed on a wooden surface, and the person appears to be using a black marker to add the final touches to the tree. The video captures the process of the painting coming to life, with the colors blending together to create a beautiful and detailed image of a tree.