Examine source code of The Shadow 2

{
  "theme": {
    "images": {
      "theme_frame": "TheShadow.jpg"
    },
    "colors": {
      "frame": "#4a71ff",
      "tab_background_text": "#11ff00"
    }
  },
  "version": "2.0",
  "name": "The Shadow 2",
  "manifest_version": 2,
  "description": "The Shadow Knows...."
}