Examine source code of FireFox4-Arrows

{
  "theme": {
    "images": {
      "theme_frame": "persona3.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "FireFox4-Arrows",
  "manifest_version": 2,
  "description": "Firefox 4- building a better internet t shirt design combined with random lines and arrows for a great abstract firefox persona"
}