Examine source code of Devonshire Sunset

{
  "theme": {
    "images": {
      "theme_frame": "heddons-mouth-sunset.jpg"
    },
    "colors": {
      "frame": "#e84141",
      "tab_background_text": "#ecfa73"
    }
  },
  "version": "2.0",
  "name": "Devonshire Sunset",
  "manifest_version": 2,
  "description": "Sunset over Heddon's Mouth, in the beautiful county of Devonshire, England."
}