Here is some more example text. The colors are saved in local storage, so if you choose a color, and then close your browser, and re-open it, you'll see the colors you chose.

More info here: MDN Web Docs: Window.localStorage

If you work with local storage, open browser dev tools.
In Chrome, look under the 'Application' tab. On the left side of the dev tools window, choose 'Local Storage', then file:///. You can then see and work with (add, edit, delete, delete all) the stored local data.