Examine source code of The Circle

{
  "theme": {
    "images": {
      "theme_frame": "The_Circle-Persona.jpg"
    },
    "colors": {
      "frame": "#3f7e91",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Circle",
  "manifest_version": 2,
  "description": "- The Circle -\nInspired by the \"Books of History Chronicles\" by Ted Dekker."
}