Examine source code of Psychonauts

{
  "theme": {
    "images": {
      "theme_frame": "firefoxp.PNG"
    },
    "colors": {
      "frame": "#e3e3e3",
      "tab_background_text": "#fffb00"
    }
  },
  "version": "2.0",
  "name": "Psychonauts",
  "manifest_version": 2,
  "description": "Just testing this out, since there isn't a Psychonauts persona yet, which really sucks.\n\nThis might be horrible, I don't know. It's my first persona."
}