Examine source code of Bills_Sharp

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxSkin.jpg"
    },
    "colors": {
      "frame": "#00028f",
      "tab_background_text": "#aeaff5"
    }
  },
  "version": "2.0",
  "name": "Bills_Sharp",
  "manifest_version": 2,
  "description": "The Buffalo Bills"
}