Examine source code of butterfly dreams

{
  "theme": {
    "images": {
      "theme_frame": "bd.jpg"
    },
    "colors": {
      "frame": "#2e2e2e",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "butterfly dreams",
  "manifest_version": 2,
  "description": "brushes from <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/f20f631f5f0c38e22ff931fb867753e429fcd3c561a508b5f70f88a7b5795b9a/http%3A//www.obsidiandawn.com\">http://www.obsidiandawn.com</a>"
}