Examine source code of Deadmau5 simple

{
  "theme": {
    "images": {
      "theme_frame": "Firefoxpersone-deadmau5.jpg"
    },
    "colors": {
      "frame": "#919191",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Deadmau5 simple",
  "manifest_version": 2,
  "description": "A cool and simple deadmau5 persona."
}