Reply To: Missing Pinterest icon and question about adjusting

It could be done like this, but will definitely require a lot more CSS.

Eg. for Feedburner subscribe widget that comes with the theme:

.themonic-subscribe {
    background-image: url("http://direct-bg-img-url.png ");
}

Similarly, for widget title background, it applies to all widget titles:

.widget-area .widget-title {
    background-image: url("http://direct-bg-img-url.png ") ;
}