Examine source code of Pimped Persona

{
  "theme": {
    "images": {
      "theme_frame": "firefox-persona.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f20000"
    }
  },
  "version": "2.0",
  "name": "Pimped Persona",
  "manifest_version": 2,
  "description": "this is my first persona. If you would like to contact me and give me some feedback contact me at: jdgillis11@yahoo.ca. Please be nice this is my first one."
}