Examine source code of PacMan wallpaper theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ccff00",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "PacMan wallpaper theme",
  "manifest_version": 2,
  "description": "this theme is a desktop background from here\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/7b713cd64717f24021ac83b091dcbddf5619ee7860ceaa1fa1045e1c224e6103/http%3A//camck.github.io/free-desktop-backgrounds/\">http://camck.github.io/free-desktop-backgrounds/</a>"
}