Examine source code of Blue Theme by Luke

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Blue Theme by Luke",
  "manifest_version": 2,
  "description": "Design by Luke. My website: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/07de0b040fc5f45bab1a049415627f862454b150afac28db91be2a4f644d20fa/http%3A//www.am-review.com/cryptosuite-review/\">CryptoSuite Review</a>"
}