This example renders CSS color names from an external CSV file as a full donut chart using React and D3. The visualization shows each color name as a slice of an SVG pie chart, with the slice fill matching the hex value of that color. The code uses React hooks (`useState`, `useEffect`) to load the data asynchronously, and D3 v5’s `csv`, `pie`, and `arc` generators to compute and draw the arc paths. ReactDOM renders the resulting SVG directly to the page, with the chart centered in a 960×500 viewport.