The image is a vibrant, expressive portrait of an elderly man. His face, rendered in a bold, impasto style, showcases deep-set eyes and a thoughtful expression. His hand rests gently under his chin, emphasizing his contemplative mood. The artist uses a striking palette of blues, purples, oranges, and yellows, creating a dynamic interplay of color and texture. The background is a series of abstract, colorful shapes which complement the subject. Write a detailed description of the given image.