Examine source code of Ikarii V1.0

{
  "theme": {
    "images": {
      "theme_frame": "IkariiFirefoxHeader.jpg"
    },
    "colors": {
      "frame": "#414241",
      "tab_background_text": "#dfe8e7"
    }
  },
  "version": "2.0",
  "name": "Ikarii V1.0",
  "manifest_version": 2,
  "description": "Australian Band Ikarii's Firefox Persona, the boys will add more of these if people enjoy using them feel free to pass this on to friends and family and don't forget to check out the band gigs on there Facebook page."
}