Examine source code of AuraShift

{
  "manifest_version": 2,
  "name": "AuraShift",
  "version": "2.0.0",
  "description": "Dynamically changes browser theme based on your mood.",
  "permissions": [
    "storage",
    "tabs",
    "theme",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "aura/scanner.js",
      "hue/painter.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "IrvaVedros7682@outlook.com",
      "strict_min_version": "91.1.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "hex/aura.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "wheel/sniffer.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_title": "AuraShift",
    "default_popup": "hex/tuner.html"
  }
}