Examine source code of M3B Colors Export

{
  "name": "M3B Export Colors",
  "description": "A browser extension which allows us to export the Material 3 colors to SCSS and CSS from Material 3 Theme Buillder (https://material-foundation.github.io/material-theme-builder/#/custom) for the M3B UI (http://m3b.dev)",
  "version": "1.2.0",
  "manifest_version": 2,
  "permissions": [
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://material-foundation.github.io/material-theme-builder/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "icons": {
    "16": "/images/icon16.png",
    "32": "/images/icon32.png",
    "48": "/images/icon48.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/images/icon16.png",
      "32": "/images/icon32.png",
      "48": "/images/icon48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d95f73c-ae46-4983-8786-a29afac895b6}"
    }
  }
}