Examine source code of Black Speech

{
  "name": "Black Speech",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Dark LOTR.jpg"
    },
    "colors": {
      "frame": "rgba(64, 63, 32, 1)",
      "tab_background_text": "rgba(130, 168, 186, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(153, 123, 34, 1)",
      "toolbar_field": "rgba(130, 168, 186, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(39, 105, 117, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{52dc6ad5-7186-4780-8c38-797742a21043}"
    }
  }
}