There are no Dib-dabs in America- at least that I know of. Looks a little sweet for me but I'm sure they are a favorite of many. As for green sweets- I'm not sure if you've done this, but do you have "jellies" there? They look like lemon, lime or oranges slices but are actually candies. That's what popped into my head first. And then gummies.
How about green jelly frogs, babies or snakes, then there are always green foil wrapped Easter eggs, mint leaves, jubes, boiled lollies, ah the list goes on. Now I might have to go and eat some of those smarties I bought :)