Examine source code of Butterfly Child

{
  "name": "Butterfly Child",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "ButterflyChildH.jpg"
    },
    "colors": {
      "frame": "rgba(9, 18, 18, 1)",
      "tab_background_text": "rgba(42, 238, 252, 1)",
      "toolbar": "rgba(9, 18, 18, 0)",
      "bookmark_text": "rgba(42, 238, 252, 1)",
      "toolbar_field": "rgba(9, 18, 18, 0.05)",
      "toolbar_field_text": "rgba(42, 238, 252, 1)",
      "tab_line": "rgba(42, 238, 252, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c7bc85ea-b778-4eeb-8232-92eb0d38a949}"
    }
  }
}