Examine source code of Memories..

{
  "theme": {
    "images": {
      "theme_frame": "MemoriesH2Custom.jpg"
    },
    "colors": {
      "frame": "#ddb791",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Memories..",
  "manifest_version": 2,
  "description": "coins, old post cards, pocket watch, dried roses, Ace of Spades, vintage, parchment, antique, chain, memories, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/1bf8710239eaf4cd9d4261fe1f8e2d2f28908f575a6f3858ae44a4f63d35fa35/http%3A//abstract.desktopnexus.com/wallpaper/777609/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/777609/</a>"
}