Examine source code of Bat - Dark Knight

{
  "theme": {
    "images": {
      "theme_frame": "dark_knight_3.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Bat - Dark Knight",
  "manifest_version": 2,
  "description": "Dark Knight Ultimate"
}