Please add an option to make placeholders visible Assegnate 4 su 5 stelle

Great addon.

But i miss an option to make the placeholders visible (border, different color, visible image).

Sometimes there are broken sites, where i am not sure, if wanted images are blocked, or if the site is broken and there is really nothing to see.

Questa recensione riguarda una versione precedente (2.2.1.1-signed) del componente aggiuntivo.