Examine source code of Guardian Angel

{
  "theme": {
    "images": {
      "theme_frame": "Firefox_Ashe_Header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Guardian Angel",
  "manifest_version": 2,
  "description": "My Persona is made from a snapshot of Phantasy Star Universe: Ambition of the Illuminus. I wanted to show my avatar at work ;) The copyright caption is now at the top as I'm using content from SEGA's game."
}