Fork of Smiley Face Part II
This example displays a dataset of color specifications and their corresponding RGB hex values as a list of cards. Each card shows the specification name, keyword, and hex value, with a color swatch previewing the actual color. The application fetches the data from a remote CSV file using `D3.csv`, and renders the interface with React components, managing asynchronous data loading through `useState`, `useCallback`, and `useEffect`. The layout uses inline styles to position the text and color preview boxes.