Examine source code of Seawave Baltic

{
  "theme": {
    "images": {
      "theme_frame": "BalticseaWavesheader.jpg"
    },
    "colors": {
      "frame": "#fcf9f9",
      "tab_background_text": "#d1e3e2"
    }
  },
  "version": "2.0",
  "name": "Seawave Baltic",
  "manifest_version": 2,
  "description": "Waves of the Baltic Sea at German Coast"
}