Examine source code of Sunset Island

{
  "theme": {
    "images": {
      "theme_frame": "lilislandheader.jpg"
    },
    "colors": {
      "frame": "#ff8fa5",
      "tab_background_text": "#85e7f2"
    }
  },
  "version": "2.0",
  "name": "Sunset Island",
  "manifest_version": 2,
  "description": "A little island at sunset."
}