Examine source code of Gmail Label Colorizer

{
  "name": "Gmail Label Colorizer",
  "description": "A simplified way to change Gmail labels to any color you want.",
  "version": "1.2.2",
  "manifest_version": 3,
  "author": "pjpscriv",
  "content_scripts": [
    {
      "matches": [
        "*://mail.google.com/mail*"
      ],
      "js": [
        "res/coloris.min.js",
        "content.js"
      ],
      "css": [
        "res/material-checkbox.css",
        "res/coloris.min.css",
        "res/text-option-hider.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "/res/checkbox-label.json"
      ],
      "matches": [
        "*://mail.google.com/mail*"
      ]
    }
  ],
  "host_permissions": [
    "*://*.google.com/mail*"
  ],
  "icons": {
    "16": "/icons/icon_16.png",
    "48": "/icons/icon_48.png",
    "128": "/icons/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gmail-label-colorizer@pjpscriv.com",
      "strict_min_version": "109.0"
    }
  }
}