A pie chart displays all 148 CSS named colors as equal-sized slices. The example loads CSV data about named colors from a GitHub gist using `d3.csv`, then converts the data to arc segments with `d3.pie` and `d3.arc`. React components render each slice as an SVG `<path>`, with the fill color set to the corresponding RGB hex value from the dataset. The visualization demonstrates integrating D3 data utilities with React's declarative rendering approach.