Examine source code of Artbookreader

{
  "theme": {
    "images": {
      "theme_frame": "My-Artbookreader.png"
    },
    "colors": {
      "frame": "#c9c5c5",
      "tab_background_text": "#c9c5c5"
    }
  },
  "version": "2.0",
  "name": "Artbookreader",
  "manifest_version": 2,
  "description": "Artbookreader, is the demonstration that a nice book, an art book, can successfully be presented in a first rate digital version to be read on an iPad, adding many potentialities unattainable with a classic paper version."
}