Examine source code of Grenz-Echo

{
  "theme": {
    "images": {
      "theme_frame": "header_firefox.jpg"
    },
    "colors": {
      "frame": "#bdbdbd",
      "tab_background_text": "#080808"
    }
  },
  "version": "2.0",
  "name": "Grenz-Echo",
  "manifest_version": 2,
  "description": "The only german speaking newspaper in belgium."
}