Examine source code of willys theme YO

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "willys theme YO",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(32, 32, 32)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(91, 225, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(85, 104, 109)",
      "button_background_hover": "rgb(90, 98, 98)",
      "frame_inactive": "rgb(0, 0, 3)",
      "icons": "rgb(215, 226, 232)",
      "sidebar_border": "rgb(38, 38, 74)",
      "sidebar_highlight_text": "rgb(244, 244, 244)",
      "sidebar_highlight": "rgb(103, 130, 130)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(55, 55, 55)",
      "tab_background_separator": "rgb(249, 249, 249)",
      "tab_loading": "rgb(174, 182, 184)",
      "tab_selected": "rgb(2, 72, 94)",
      "tab_text": "rgb(253, 253, 253)",
      "toolbar_field_border": "rgb(255, 255, 255)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_field_highlight_text": "rgb(4, 4, 4)",
      "toolbar_field_highlight": "rgb(91, 225, 255)",
      "toolbar_field_separator": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(0, 0, 0)",
      "toolbar_vertical_separator": "rgb(167, 218, 248)"
    }
  }
}