Examine source code of Majima Goro

{
  "name": "Majima Goro",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "®️ on Twitter.jpeg"
    },
    "colors": {
      "frame": "rgba(194, 194, 194, 1)",
      "tab_background_text": "rgba(168, 142, 123, 1)",
      "toolbar": "rgba(161, 161, 161, 1)",
      "bookmark_text": "rgba(219, 219, 219, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eee27dcb-0fc0-454f-bd3f-bcdad903d879}"
    }
  }
}