Examine source code of Rideau River Sunset

{
  "theme": {
    "images": {
      "theme_frame": "03-4-1017-27236H.jpg"
    },
    "colors": {
      "frame": "#7d7878",
      "tab_background_text": "#f2e9e9"
    }
  },
  "version": "2.0",
  "name": "Rideau River Sunset",
  "manifest_version": 2,
  "description": "Small Waterfall at Sunset"
}