Examine source code of kolorit

{
  "theme": {
    "images": {
      "theme_frame": "firefox_kolorit.png"
    },
    "colors": {
      "frame": "#c4c4c4",
      "tab_background_text": "#f0e8aa"
    }
  },
  "version": "2.0",
  "name": "kolorit",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/041cf5b889b6774a9d9f217624fdae2d5120e7f05104a0c7f94d33972d57e530/http%3A//www.kolorit.ch\" rel=\"nofollow\">http://www.kolorit.ch</a>"
}