Examine source code of Summer Haze by M♥Donna

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#b8e4f2",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Summer Haze by M♥Donna",
  "manifest_version": 2,
  "description": "My wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/b68025d93dd16646bca95412cd98e3ae8ef397e5b244cd973c105d2d397d7f86/https%3A//nature.desktopnexus.com/wallpaper/2274975/\">https://nature.desktopnexus.com/wallpaper/2274975/</a>"
}