Examine source code of Okinawa Heart

{
  "theme": {
    "images": {
      "theme_frame": "firefoxOkinawatheme.png"
    },
    "colors": {
      "frame": "#a6a6a6",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Okinawa Heart",
  "manifest_version": 2,
  "description": "A little dragon for those of you those like the heart of Okinawa.  沖縄の心のテーマです。"
}