Examine source code of Frost Covered Window

{
  "theme": {
    "images": {
      "theme_frame": "header189.jpg"
    },
    "colors": {
      "frame": "#dedbdb",
      "tab_background_text": "#f7f2f2"
    }
  },
  "version": "2.0",
  "name": "Frost Covered Window",
  "manifest_version": 2,
  "description": "Winter frost covering a window."
}