Thanks! There's no way to do that built-in. You could do it pretty easily for just the text by putting text tags on the footnotes. For the frame, though, I'd have to think about it. The thing that jumps to mind would be modifying the footnotes dict to have tuple values, where the tuples are like (footnote_text, style), and then changing the tag code appropriately. The screen could then read the style name instead of just setting a fixed style_prefix.