Examine source code of Greenboxes

{
  "theme": {
    "images": {
      "theme_frame": "HeaderKopie.jpg"
    },
    "colors": {
      "frame": "#0d5e00",
      "tab_background_text": "#0c0d0c"
    }
  },
  "version": "2.0",
  "name": "Greenboxes",
  "manifest_version": 2,
  "description": "Green, modern persona with greenish boxes..."
}