Highlight active thumb Smugmug style gallery

Allen

Ever since the change to "NewSmug" I've been trying to find a way to highlight, add border, to an active thumb in the Smugmug style gallery.
active thumb = thumb of large photo currently displayed

Any help with CSS would be appreciated, thanks.

Hikin' Mike

I'm not seeing any extra active class like the navigation (.sm-page-widget-nav-activepage) does.

Allen

I think Smug needs to add a class to be able to enable this.