Examine source code of Tiger -b&w-

{
  "theme": {
    "images": {
      "theme_frame": "HeaderTiger.jpg"
    },
    "colors": {
      "frame": "#c2c2c2",
      "tab_background_text": "#2b2b2b"
    }
  },
  "version": "2.0",
  "name": "Tiger -b&w-",
  "manifest_version": 2,
  "description": "a simple persona good for long time usage for tigers and black and white lovers"
}