Examine source code of Placebo Match

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#2a2a2a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Placebo Match",
  "manifest_version": 2,
  "description": "Colors for Placebo Windows 7 theme (Black Market):\n\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/a4b506c49be3c66c7e1932778457b2fd42d4499a6080863f7af2b17c6c4dc901/http%3A//solmiler.deviantart.com/art/Placebo-for-Windows-7-188414149\">http://solmiler.deviantart.com/art/Placebo-for-Windows-7-188414149</a>"
}