Examine source code of AKLPs Gradient Style

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#870000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "AKLPs Gradient Style",
  "manifest_version": 2,
  "description": "This gradient is part of this gradient pack:\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/952b52f81116e33f6ad90da4e860a757091fb3e666cef0f26041aeaa1adebd10/http%3A//aklp.deviantart.com/art/AKLPs-Gradient-Pack-2-132472461\">http://aklp.deviantart.com/art/AKLPs-Gradient-Pack-2-132472461</a>\n\nMade by AKLP"
}