Yeah, I read up on those earlier, and there are a few problems with those that I'm not sure how to fix... For instance, it can't really be on the UI Layer, as mine is not there at all. (It causes issues with the other numbers and letters in the game, especially on the title screen, as they all seem to share properties) The other issue (at least with the Mario UI example) is that being above a certain y coordinate would not work either, as you can usually hop up at the same level as your energy and missile counter as well.
The other issue is that I have no idea how to implement or work the code in an executable manner anyway, which could be a problem as well, hah! So yes, writing out code would be a huge help if you had the time!