Examine source code of Wormhole Interstellar

{
  "name": "Wormhole Interstellar",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "worm hole.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(19, 5, 66, 1)",
      "toolbar": "rgba(4, 0, 10, 1)",
      "bookmark_text": "rgba(95, 61, 158, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(36, 1, 82, 1)",
      "tab_line": "rgba(44, 0, 125, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{273244bf-2b09-4e5e-8c2e-2591f09adf82}"
    }
  }
}