o yea, i tried changing them but they just go a shade of grey, but ive seen videos with people with neon green ones
Image formats like "IA4" and "I4" are special, they can only be black and white. When converting an image into one of them any colors will turn into shades of gray. While in the game any white will become colored as determined by the Palettes in the same Resource File (BRRES). This is true for any "IA4" or "I4" image file, just look at the "MenSelchrMark" images; they get colored based on which player they are displayed for.You'll have to figure out which Palette file is the one you want and which color means what through trial and error; keep a backup of your "info.pac" to be safe. Be warned, export any images before doing anything else, they will likely corrupt when you edit the Palettes. Merely Replace all the images afterward and they'll be fine. Good luck getting the colors you want. Unfortunately, it'll be time-consuming...
I'm still experimenting on getting numbers will un-colored borders.