A React application renders a column of horizontal stripes, each representing a CSS named color from a CSV dataset loaded via D3’s `csv` utility. The data, fetched from a GitHub gist, populates React state through `useEffect`, and each row’s background color is set using its `RGB hex value` field. While the data loads, the view displays a large “Loading…” message. The example demonstrates combining D3’s data-loading capabilities with React’s declarative rendering and state management to produce a simple, visual color catalog.