If you have the driver installed you will see a folder named 'mods' in your ff7 folder. Open it and create a new folder. Name it what ever you want. Now open the new folder and and create again a new one, this time name it 'Menu'. In this folder you have to put your modified fonts as PNG. To simulate the pallettes the filename need an addon '_00'. Example: 'usfont_a_h_00.png', 'usfont_a_h_02.png', and so on (the number for the fonts rises for some reason in two steps, the last is '_14') . Back to the FF7 folder you must open ff7opengl.cfg and search for the line 'mod_path ='. Now add the name of the first folder you create in the mod folder. Save it. Start the game and you should see your edited fonts...
If you haven't installed Aali's driver yet, you should look at this:
Games Converter. It is important to use this converter or the New to Old patch for the re-release or Aalis driver wouldn't work.
At last if you don't want to recreate the font you should look for the Avalache GUI ( find here:
The Big List of Mods) or if the converter works for you (not sure which language you have) I recommend the Menu Overhaul (now in the Reunion mod).
One last thing the colors for the fonts are:
_00 - grey
_02 - blue
_04 - red
_06 - purple
_08 - green
_10 - cyan
_12 - yellow
_14 - white