Examine source code of Madagaskar Sunset

{
  "theme": {
    "images": {
      "theme_frame": "madagaskar_sunset_top.jpg"
    },
    "colors": {
      "frame": "#78644f",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Madagaskar Sunset",
  "manifest_version": 2,
  "description": "A beautiful sunset at the coast of Madagascar. You see the fishermen in their small dugout boats on the sea."
}