This example displays a pie chart of CSS named colors, with each slice filled using its corresponding RGB hex value from the loaded dataset. The visualization uses React state and the `useEffect` hook to asynchronously fetch CSV data via `d3.csv`, then renders the chart as SVG paths. The pie layout is generated with `d3.pie()` and sectors are drawn using `d3.arc()`, with all geometry centered within a 960×500 viewport.