Examine source code of After the gates close

{
  "name": "After the gates close",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "whatever-is-on-top-of-that-building-is-pretty-terrifying-photo-u1.jpg"
    },
    "colors": {
      "toolbar": "rgba(26, 22, 22, 1)",
      "toolbar_field": "rgba(74, 163, 78, 1)",
      "toolbar_field_text": "rgba(112, 96, 96, 1)",
      "frame": "rgba(179, 185, 199, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(224, 25, 25, 1)"
    }
  }
}