Examine source code of Mushroom Cloud

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#330033"
    }
  },
  "version": "2.0",
  "name": "Mushroom Cloud",
  "manifest_version": 2,
  "description": "This is a city, but has a nuclear bomb blast in the background.  It is suppose to be abstract/loose.\nI wanted a variety of colors for the Persona"
}