Examine source code of Jack my Dog

{
  "theme": {
    "images": {
      "theme_frame": "JackTop.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Jack my Dog",
  "manifest_version": 2,
  "description": "My dog who got killed by an Alsatian. I really wanted this for my own Firefox Persona for obviously personal reasons. If anyone else likes Jack Russel's this might be a nice one for you also."
}