Examine source code of Blue Dark DK

{
  "theme": {
    "images": {
      "theme_frame": "00936_truecolorsofstrasbourg_1280x800n1.JPG"
    },
    "colors": {
      "frame": "#878383",
      "tab_background_text": "#d4a011"
    }
  },
  "version": "2.0",
  "name": "Blue Dark DK",
  "manifest_version": 2,
  "description": "Len tak"
}