Examine source code of Battlefield 3 design

{
  "theme": {
    "images": {
      "theme_frame": "Battlefield3head.jpg"
    },
    "colors": {
      "frame": "#d9d5d5",
      "tab_background_text": "#87e3ed"
    }
  },
  "version": "2.0",
  "name": "Battlefield 3 design",
  "manifest_version": 2,
  "description": "Because there are millions of the same design i came up with something different just for you.\nText in sky blue.\nHope you like it.\nEnjoy."
}