Examine source code of Pure MacOS Black

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MacOS Black",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(59, 59, 59)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(27, 27, 27)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(43, 43, 43)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(21, 132, 149, 0)",
      "popup": "rgb(74, 74, 74)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(81, 81, 81)",
      "button_background_hover": "rgb(81, 81, 81)",
      "ntp_background": "rgb(27, 27, 27)",
      "popup_highlight": "rgb(97, 97, 97)",
      "tab_background_separator": "rgb(34, 25, 77)",
      "tab_selected": "rgb(59, 59, 59)",
      "toolbar_field_focus": "rgb(43, 43, 43)",
      "toolbar_field_highlight": "rgb(56, 56, 56)",
      "tab_loading": "rgba(21, 132, 149, 0)"
    }
  }
}