Examine source code of Raspberry Season

{
  "theme": {
    "images": {
      "theme_frame": "RaspberrySeasonH.jpg"
    },
    "colors": {
      "frame": "#b9e388",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Raspberry Season",
  "manifest_version": 2,
  "description": "blooms, blossoms, butterfly, flowers, fragrant, fruit, goodness, green, health, leaves, nature, raspberries, red, summer, sweet\t\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/46806650cfd48a3079722a746de7ef02aa35b39c32c2b5cd7a58436850e6e4cf/http%3A//nature.desktopnexus.com/wallpaper/1102232/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1102232/</a>"
}