Examine source code of ambigram-julius

{
  "theme": {
    "images": {
      "theme_frame": "formozillatheme6.jpg"
    },
    "colors": {
      "frame": "#a8a5a5",
      "tab_background_text": "#5b6dde"
    }
  },
  "version": "2.0",
  "name": "ambigram-julius",
  "manifest_version": 2,
  "description": "my first persona.\nit is an ambigram of my name, julius\nmay be can be choice as ambigram persona"
}