This example visualizes all 148 named CSS colors as filled arc segments arranged in a pie chart, using data from a CSV file loaded via `d3.csv`. Each arc is colored with its corresponding `RGB hex value` using the `d3.arc` and `d3.pie` APIs, while the React component manages state and fetching. The SVG output is centered on a 960×500 canvas, with each segment sized equally to showcase the full spectrum of CSS color names.