Examine source code of Soft sunsets

{
  "theme": {
    "images": {
      "theme_frame": "032crop1.jpg"
    },
    "colors": {
      "frame": "#dbdbdb",
      "tab_background_text": "#211e3d"
    }
  },
  "version": "2.0",
  "name": "Soft sunsets",
  "manifest_version": 2,
  "description": "The sunset over Gomel, Belarus one July evening."
}