Examine source code of Perfume Fushizen

{
  "theme": {
    "images": {
      "theme_frame": "firefoxpfmhead.jpg"
    },
    "colors": {
      "frame": "#878787",
      "tab_background_text": "#bf0d0d"
    }
  },
  "version": "2.0",
  "name": "Perfume Fushizen",
  "manifest_version": 2,
  "description": "Perfume不自然なガール"
}