Examine source code of Abstract Mozilla Firefox

{
  "theme": {
    "images": {
      "theme_frame": "MozillaFirefox.jpg"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Abstract Mozilla Firefox",
  "manifest_version": 2,
  "description": "A awesome Mozilla Firefox personas. I used Adobe Photoshop, and a Mozilla Firefox icon that I found on the \"Rocketdock\" website."
}