I'm not the most tech-savy guy, but I would think if you opened the .mll file in the MaLa layout editor you should be able to modify the font.
All you would really be doing is a small edit to the original so I see no reason why it wouldn't work.
For example, when I create the layouts sometimes you don't know if all the text fit. So Id do the layout, save it, open it, test it, record what I need to change and go back.
I open the .mll file, make the edits, save, and I'm in business.
Take for example "game has been played times." The "game has been played times" is part of the background itself, so it remains sized and has no issues. But the number of plays is part of the layout. Depending on the font you use it might be too big or too small. I often have to create the 1st draft of the skin, do my testing and then modify.
It's simple and should be the solution you need.