Examine source code of river isar 2

{
  "theme": {
    "images": {
      "theme_frame": "isar4a.jpg"
    },
    "colors": {
      "frame": "#42230e",
      "tab_background_text": "#42230e"
    }
  },
  "version": "2.0",
  "name": "river isar 2",
  "manifest_version": 2,
  "description": "the river isar near Vorderriss, july 2009"
}