This example shows how React and D3 work together to render a grid of color swatches, one for each named CSS color loaded from an MDN dataset. The React component manages the asynchronous data loading with the `useState` and `useEffect` hooks, fetching the CSV via D3’s `csv` method. Once loaded, each color is mapped to a div whose background color is set using the `RGB hex value` field from the dataset. The visualization relies on React’s declarative rendering rather than D3’s DOM manipulation, demonstrating a clean separation of data loading and UI presentation.