Those buttons in the main menu (New, Load, Options, Quit etc) and also the clickable text in books (Topics, Quests, Take etc - not the actual topics, but the glowing buttons)... how do I replace them?

I have a nice high res font replacement for the regular fonts, but the glowing buttons remain untouched in their vanilla resolution and the difference is jarring because they're so blurry.

Those are not exactly fonts, but pre-made textures. They come in normal type, and with _over and _pressed suffixes when hovering over & pressing them.

They're in Data Files\Textures, lokok for files starting with menu_ and then having obvious name, like menu_newgame for the New Game button.

There should be a replacer for them. MGSO for sure has them replaced.