Examine source code of OF2007

{
  "theme": {
    "images": {
      "theme_frame": "PersonasSkin-OF2007StyleHeader.jpg"
    },
    "colors": {
      "frame": "#567db0",
      "tab_background_text": "#567db0"
    }
  },
  "version": "2.0",
  "name": "OF2007",
  "manifest_version": 2,
  "description": "A beautifull and relaxant style for your Firefox."
}