Examine source code of Spectacular Ocean Sunset

{
  "theme": {
    "images": {
      "theme_frame": "SpectacularOceanSunset-2.jpg"
    },
    "colors": {
      "frame": "#d9d2d2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Spectacular Ocean Sunset",
  "manifest_version": 2,
  "description": "Spectacular and colorful ocean sunset (image from free site)"
}