This example shows a full-screen SVG pie chart of all CSS named colors, with each slice colored by its corresponding hex value from a CSV dataset. React manages the asynchronous data loading with `useState` and `useEffect`, while D3’s `csv`, `pie`, and `arc` functions calculate the slice angles and path geometry. The chart centers on a 960×500 viewport, rendering each pie segment as a React `<path>` element whose fill is set directly from the data’s RGB hex field.