Examine source code of Very Bright

{
  "theme": {
    "images": {
      "theme_frame": "VeryBrightH2Custom.jpg"
    },
    "colors": {
      "frame": "#5222d6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Very Bright",
  "manifest_version": 2,
  "description": "bright, flowers, fractal, nature, neon, purple, lavender, lilac, My wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/547d4c493924a994205a7546a9f6cd5ac8ebc7f68980ef23877fc9439d1e5f8f/http%3A//abstract.desktopnexus.com/wallpaper/990590/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/990590/</a>"
}