Examine source code of Windows Welcome

{
  "theme": {
    "images": {
      "theme_frame": "win7_final_header.jpg"
    },
    "colors": {
      "frame": "#22c2ff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Windows Welcome",
  "manifest_version": 2,
  "description": "Based off of the Windows 7 welcome screen, this theme captures the blue, serene images of the new Microsoft OS."
}