Examine source code of MLIA - MyLifeIsAverage

{
  "theme": {
    "images": {
      "theme_frame": "personaMLIAhead.png"
    },
    "colors": {
      "frame": "#404040",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "MLIA - MyLifeIsAverage",
  "manifest_version": 2,
  "description": "Today, I made a Firefox Persona for all the average fans of My Life Is Average. Rock on, average people. MLIA."
}