Examine source code of sample2011

{
  "theme": {
    "images": {
      "theme_frame": "ulo222.jpg"
    },
    "colors": {
      "frame": "#f7efef",
      "tab_background_text": "#0d0d0d"
    }
  },
  "version": "2.0",
  "name": "sample2011",
  "manifest_version": 2,
  "description": "adadas"
}