Examine source code of Green Tree

{
  "theme": {
    "images": {
      "theme_frame": "g.jpg"
    },
    "colors": {
      "frame": "#075706",
      "tab_background_text": "#bdc9bb"
    }
  },
  "version": "2.0",
  "name": "Green Tree",
  "manifest_version": 2,
  "description": "Green"
}