This example displays CSS named colors as horizontal swatches stacked vertically, each rendered as a colored div. It fetches the CSS named colors dataset from a GitHub gist using D3’s `csv` utility, then stores the parsed result in React state via the `useState` and `useEffect` hooks. While the data loads, the interface shows a large “Loading…” message; once loaded, it maps each row to a div whose background color matches the row’s RGB hex value, creating a full-width color spectrum strip.