Examine source code of NightRacingGB

{
  "theme": {
    "images": {
      "theme_frame": "NightRacingGBHeader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "NightRacingGB",
  "manifest_version": 2,
  "description": "This is a night shot of the spotlights at athletics sports field \"Racing Gentbrugge\", with trees which already are cut by now. My first trial on night shots with our new digital camera in 01-2009."
}