I believe this has not yet been addressed with. Only the Hub of the Day has this feature.
One of my hubs got the HubNugget accolade, but nothing shows up to distinguish it from my other hubs.
I guess this is because Hub of the Day is more prestigious; and hence, it may be the one the deserves this special feature.
I don't know. But for me, it will be really cool if there would be a way we can see which of the HUb received the HubNugget accolade. :)