This example renders a pie chart of CSS named colors using React for the user interface and D3 for the data loading and geometry. The `d3.csv` function fetches color data from a remote gist, while React's `useState` and `useEffect` manage the asynchronous loading state. Each slice is drawn as an SVG path using `d3.arc` and `d3.pie`, with the fill color pulled directly from the dataset's hex values. The visualization displays the full spectrum of named colors as equal-sized wedges.