Examine source code of Firefox Green Hacker

{
  "theme": {
    "images": {
      "theme_frame": "up.jpg"
    },
    "colors": {
      "frame": "#8a8585",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Firefox Green Hacker",
  "manifest_version": 2,
  "description": "I nice Persona - One of the little that let you read your bookmarks clearly!!"
}