Color Palette for Code Editor (.txt)

Hello. As I understand it, it would be possible to colorize text in a .txt file but not without building your own package & other things I have no interest in doing.

I'm using Visual Studio and have "note" .txt files, 4 files in a 4×4 grid. All of the notes are plain white. I wish there was a color palette I could select to highlight certain notes and/or headers. Would this be possible with any other file format that you know of?

I know I could make them HTML files & write a CSS file. Was…

Color Palette for Code Editor (.txt)