Examine source code of Black + Orange

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Black + Orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 27, 27)",
      "toolbar_text": "rgb(243, 240, 238)",
      "frame": "rgb(8, 8, 8)",
      "tab_background_text": "rgb(243, 240, 238)",
      "toolbar_field": "rgb(16, 12, 8)",
      "toolbar_field_text": "rgb(243, 240, 238)",
      "tab_line": "rgb(239, 134, 61)",
      "popup": "rgb(244, 144, 48)",
      "popup_text": "rgb(27, 27, 27)",
      "button_background_active": "rgb(239, 134, 61)",
      "icons": "rgb(243, 240, 238)",
      "sidebar_border": "rgb(239, 134, 61)",
      "sidebar_text": "rgb(243, 240, 238)",
      "sidebar": "rgb(27, 27, 27)",
      "tab_selected": "rgb(244, 144, 48)",
      "tab_text": "rgb(27, 27, 27)",
      "toolbar_field_separator": "rgb(239, 134, 61)",
      "toolbar_vertical_separator": "rgb(239, 134, 61)",
      "tab_loading": "rgb(239, 134, 61)"
    }
  }
}