Examine source code of Books - Simple

{
  "theme": {
    "images": {
      "theme_frame": "Books1Persona_Headercopy.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Books - Simple",
  "manifest_version": 2,
  "description": "My second Persona, created from a desktop background that I designed a few months back"
}