.dnd-library-wrapper .editor-item .meta.type-custom {
    background-image: url('icons/htmlsnippet-gray.png');
}
.scald-menu .add-buttons .add-htmlsnippet {
    background: url('icons/htmlsnippet.png') 50% 50% no-repeat;
}
.scald-menu .add-buttons .add-htmlsnippet:hover {
    background-image: url('icons/htmlsnippet-blue.png');
}