Examine source code of Beyond What was Seen

{
  "name": "Beyond What is Seen",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Beyond What is Seen   new.jpg"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 1)",
      "tab_background_text": "rgba(250, 218, 153, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0d9e6b7d-e62f-4888-87a4-40bc2d2d7f94}"
    }
  }
}