1. Seurat added this border of red, orange, and blue dots three years after the rest of the painting was completed.
2. A yellow pigment that Seurat used has faded over time, leaving the painting less luminous than it was originally.
3. He paints this dress with a combination of red, orange, and blue dots.
4. Seurat paints the modern figures in classical sculptural poses to give them a sense of permanence.
5. For the trees, Seurat uses green brushstrokes mixed in with analogous blues and yellows.