Examine source code of BMW e28 mountains

{
  "theme": {
    "images": {
      "theme_frame": "Firefox_Persona_1b.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#9c9c9c"
    }
  },
  "version": "2.0",
  "name": "BMW e28 mountains",
  "manifest_version": 2,
  "description": "This is a persona I made because I love this car."
}