Examine source code of Xenoblade Chronicles 2

{
  "name": "Xenoblade Chronicles 2",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "XC2 theme.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{257c1329-4664-4ef9-93b7-3f59281b9c6d}"
    }
  }
}