If you’re wanting to do this for documentation purposes, there’s a few built-in features that might get you close.
If you add Notes to your widgets and choose the option “Include Widget Notes as Footnotes” when you generate the page, colored numbers will appear next to those widgets on the site. There’s a way you can turn them on-and-off under the “Notes” side panel.
If the widgets you want to highlight are all interactive, you can use the “Highlight interactive elements” button on the “Pages” panel.
