Examine source code of Netflix Color Plus

{
  "manifest_version": 2,
  "name": "Netflix Color Plus",
  "description": "Customize the look of Netflix! Plus extra features for a better user experience!",
  "version": "2.6.4",
  "icons": {
    "16": "icons/netflix-color-plus-16.png",
    "48": "icons/netflix-color-plus-48.png",
    "128": "icons/netflix-color-plus-128.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/netflix-color-plus-16.png",
      "48": "icons/netflix-color-plus-48.png",
      "128": "icons/netflix-color-plus-128.png"
    }
  },
  "background": {
    "scripts": [
      "shared/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "css/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "NetflixColorPlus@extension",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}