Examine source code of Under Construction site

{
  "theme": {
    "images": {
      "theme_frame": "Encabezado3.jpg"
    },
    "colors": {
      "frame": "#fff200",
      "tab_background_text": "#9e9e9e"
    }
  },
  "version": "2.0",
  "name": "Under Construction site",
  "manifest_version": 2,
  "description": "This is a simple skin that likes me, if you like it okay! You are free to use and modify it!"
}