Examine source code of Arstotzchan theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#7a7474",
      "tab_background_text": "#cfcdcd"
    }
  },
  "version": "2.0",
  "name": "Arstotzchan theme",
  "manifest_version": 2,
  "description": "Based on the Game \"Papers Please\" by Lucas Pope \ncheck it out!\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/c4b8d6a7f446ab9d6eb0ef8d858a0a53b9f67797ee1093dd8dcf97854b9074d4/http%3A//papersplea.se/\">http://papersplea.se/</a>"
}