This example renders the CSS named colors dataset as a vertical sequence of colored strips, one per color, using React to manage state and update the DOM. It loads the CSV data with d3.csv and stores it in React state via the useEffect hook. Each strip’s background color is set from the “RGB hex value” field, with a fixed width of 960 pixels and a height of 4 pixels. The visualization demonstrates a simple, data-driven layout where React handles rendering and D3 handles data fetching.