This example shows a pie chart of CSS named colors, with each slice filled using the color’s RGB hex value from a CSV dataset loaded via D3’s `csv` utility. React’s `useState` and `useEffect` manage the asynchronous data loading, displaying a “Loading…“ message until the data arrives. The SVG pie chart is generated with D3’s `pie` and `arc` functions, and each segment is rendered as an SVG `path` element with a fill color taken directly from the dataset’s `RGB hex value` column.