You can override any color you want in VS Code with a couple easy settings in your settings.json file: workbench.colorCustomizations and editor.tokenColorCustomizations
You have to package it if you want to make it easy for other people to install, but if you just want to play with it, just open settings.json and start feeding it colors.
https://code.visualstudio.com/docs/getstarted/themes#_custom...
You have to package it if you want to make it easy for other people to install, but if you just want to play with it, just open settings.json and start feeding it colors.