Examine source code of VistaFox_Green

{
  "theme": {
    "images": {
      "theme_frame": "VistaFox_green.jpg"
    },
    "colors": {
      "frame": "#2db500",
      "tab_background_text": "#2db500"
    }
  },
  "version": "2.0",
  "name": "VistaFox_Green",
  "manifest_version": 2,
  "description": "A green, Vista - styled Persona for Firefox."
}