Examine source code of CarlosTest

{
  "name": "CarlosTest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "void.png"
    },
    "colors": {
      "frame": "rgba(41, 41, 41, 1)",
      "tab_background_text": "rgba(204, 204, 204, 1)",
      "toolbar": "rgba(64, 64, 64, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(64, 64, 64, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4b62aa54-36f1-4799-87f5-940440d8eb6d}"
    }
  }
}