Examine source code of Hulk Smash

{
  "theme": {
    "images": {
      "theme_frame": "Hulksmash.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#f7f7f7"
    }
  },
  "version": "2.0",
  "name": "Hulk Smash",
  "manifest_version": 2,
  "description": "Incredible hulk comic movie smash"
}