Examine source code of On Vacation 3

{
  "theme": {
    "images": {
      "theme_frame": "h_onvacation3.jpg"
    },
    "colors": {
      "frame": "#ffd49c",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "On Vacation 3",
  "manifest_version": 2,
  "description": "Beach, clear, water, sand, palm, trees, palmtrees, coconuts, hammock, blue, sky, island, horizon, vertical, daytime, mountain, paradise, relaxing, summer, sunshine, escape, magic, tropical, hideaway, life, feeling, good, silens, wind, phenomena, fantasy, beautiful,"
}