Examine source code of Roman Castle

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_Castle.jpg"
    },
    "colors": {
      "frame": "#b1e8e7",
      "tab_background_text": "#052940"
    }
  },
  "version": "2.0",
  "name": "Roman Castle",
  "manifest_version": 2,
  "description": "Abeautiful Roman Castle in South of italy."
}