Examine source code of Playwithnight

{
  "name": "Playwithnight",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Adventure-time-wallpaper-if-anyone-wants-it-adventuretime.png"
    },
    "colors": {
      "frame": "rgba(78, 82, 92, 1)",
      "tab_background_text": "rgba(255, 174, 130, 1)",
      "toolbar": "rgba(36, 27, 24, 1)",
      "bookmark_text": "rgba(250, 207, 180, 1)",
      "toolbar_field": "rgba(222, 218, 240, 0.8)",
      "toolbar_field_text": "rgba(107, 84, 106, 1)",
      "tab_line": "rgba(255, 174, 130, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bf2b358c-c920-4471-a05f-5ae5e654a8ac}"
    }
  }
}