This example visualizes CSS named colors as a circular pie chart, with each wedge representing one color from a CSV dataset loaded via `d3.csv`. The React `App` component fetches the data asynchronously and renders SVG paths using `d3.arc` to compute the wedge geometries based on evenly divided start and end angles. The chart sits centered within a 960×500 SVG canvas, with each path filled by the color’s hex value from the data.