Examine source code of Greenpeace.2

{
  "theme": {
    "images": {
      "theme_frame": "Greenpeace.jpg"
    },
    "colors": {
      "frame": "#14a861",
      "tab_background_text": "#949191"
    }
  },
  "version": "2.0",
  "name": "Greenpeace.2",
  "manifest_version": 2,
  "description": "Greenpeace"
}