Examine source code of Sunset Vista

{
  "theme": {
    "images": {
      "theme_frame": "sunsetheader.jpg"
    },
    "colors": {
      "frame": "#191d26",
      "tab_background_text": "#f5fcf4"
    }
  },
  "version": "2.0",
  "name": "Sunset Vista",
  "manifest_version": 2,
  "description": "A picture I took on a hike up the Flattop mountain in Alaska.  That day was soooo beautiful.  The clouds alone were stunning.\n\nHope you like it! -Whistlebird ^_^"
}