Examine source code of Stormy landscape

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#c4c2c2",
      "tab_background_text": "#c4c2c2"
    }
  },
  "version": "2.0",
  "name": "Stormy landscape",
  "manifest_version": 2,
  "description": "Island landscape"
}