Examine source code of Win 7-esque Silvie

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Win 7-esque Silvie",
  "manifest_version": 2,
  "description": "As promised, Silvie from Wanko to Kurasou. Kotarou is coming up next."
}