Spacing chat lines?

[Wella]

Hey there folks. I was just wondering if it is possible to edit the space inbetween lines in the chat box, because the pixel font I'm using overlaps a lot with the line below it, especially since I'm using a "thin outline" on the font. I'm currently using Prat.

Thanks in advance.

Edit: Figured I'd ask my other little question in the same thread, too: is it possible to change the border texture around the world map? I use Cartographer as my world map mod but was wondering if it would be easy to slap a 2px black border around the edge, and maybe edit things like the buttons, font, title, etc. But mainly the border.