Examine source code of Fancy Pants

{
  "theme": {
    "images": {
      "theme_frame": "FancyPantsHeader.JPG"
    },
    "colors": {
      "frame": "#e39322",
      "tab_background_text": "#e39322"
    }
  },
  "version": "2.0",
  "name": "Fancy Pants",
  "manifest_version": 2,
  "description": "The awesomest stickman with the awesomest pants, right on your browser."
}