Examine source code of Backwater

{
  "theme": {
    "images": {
      "theme_frame": "sunset-p.jpg"
    },
    "colors": {
      "frame": "#2b71cc",
      "tab_background_text": "#459bb5"
    }
  },
  "version": "2.0",
  "name": "Backwater",
  "manifest_version": 2,
  "description": "Sunset over the backwater of Rainbow Beach/Tin Can Bay"
}