Georges Seurat rejected the 'messy' brushstrokes of Impressionism in favor of a more scientific approach called 'Pointillism' (or Divisionism). In his masterpiece, 'A Sunday Afternoon on the Island of La Grande Jatte' (1884), Seurat applied millions of tiny dots of pure color onto the canvas. Instead of mixing the colors on a palette, he relied on 'optical mixing'—the process where the viewer's eye blends the dots together when standing at a distance. For example, blue and yellow dots appear as green to the observer. This method took Seurat two years to complete and was based on contemporary theories of color and light. While critics initially mocked the style as 'confetti' or 'stippling,' it paved the way for modern color theory and even the pixel technology used in digital screens today.