I'd seen that post, and just skimmed it again to see if I missed something, but I don't see anything about style transfer unless you mean writing prompts like "thing as painted by artist". Which works when "thing" is a sufficiently well known work (as I suppose my "Van Gogh self portrait" example would be), but I meant something more along the lines of "[image] as painted by $ARTIST", or "[image] as drawn in $STYLE".