Optional ReadonlybackgroundThe optional background color of the overlay icon.
Optional ReadonlycolorThe color of the overlaying icon. If not specified, then the default icon color will be used.
ReadonlyiconThis should be the entire Font Awesome class array, for instance ['fa', 'fa-paw'] For the existing icons, see here: https://fontawesome.com/v4.7.0/icons/.
ReadonlypositionThe position where the decoration will be placed on the top of the original icon.
Has not effect if the widget being decorated has no associated icon.