Examine source code of Minou cat

{
  "theme": {
    "images": {
      "theme_frame": "chats.jpg"
    },
    "colors": {
      "frame": "#c7c3c3",
      "tab_background_text": "#fffb00"
    }
  },
  "version": "2.0",
  "name": "Minou cat",
  "manifest_version": 2,
  "description": "Chat minou trop mignon qui n'attend qu'a être adopté..."
}