Examine source code of Hunter X Hunter

{
  "name": "Hunter X Hunter",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "images.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 0, 238, 1)",
      "toolbar": "rgba(245, 30, 30, 1)",
      "bookmark_text": "rgba(37, 224, 9, 1)",
      "toolbar_field": "rgba(22, 50, 227, 0.47)",
      "toolbar_field_text": "rgba(250, 226, 8, 1)",
      "tab_line": "rgba(245, 88, 88, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cf330a25-9b90-4693-909e-0305e7f3c0dc}"
    }
  }
}