Examine source code of Piratenpartij

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#6600ff",
      "tab_background_text": "#b9bbd8"
    }
  },
  "version": "2.0",
  "name": "Piratenpartij",
  "manifest_version": 2,
  "description": "Using official colors, font and logo of the Dutch Pirates."
}