Examine source code of Accel World

{
  "theme": {
    "images": {
      "theme_frame": "Firefoxbovenbalkjedingaccelworld.jpg"
    },
    "colors": {
      "frame": "#ffea00",
      "tab_background_text": "#ff0000"
    }
  },
  "version": "2.0",
  "name": "Accel World",
  "manifest_version": 2,
  "description": "An Accel World persona, since there was none. ;3"
}