Examine source code of Punktown

{
  "theme": {
    "images": {
      "theme_frame": "punktown.jpg"
    },
    "colors": {
      "frame": "#807b7b",
      "tab_background_text": "#990b0b"
    }
  },
  "version": "2.0",
  "name": "Punktown",
  "manifest_version": 2,
  "description": "graphic city in war by xfuelx"
}