Examine source code of All Hallows

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "All Hallows",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(14, 17, 17)",
      "toolbar_text": "rgb(123, 140, 143)",
      "frame": "rgb(55, 63, 71)",
      "tab_background_text": "rgb(198, 200, 200)",
      "toolbar_field": "rgb(53, 56, 57)",
      "toolbar_field_text": "rgb(198, 200, 200)",
      "tab_line": "rgb(137, 161, 166)",
      "popup": "rgb(14, 17, 17)",
      "popup_text": "rgb(198, 200, 200)",
      "button_background_active": "rgb(43, 52, 60)",
      "button_background_hover": "rgb(39, 40, 40)",
      "frame_inactive": "rgb(43, 44, 44)",
      "ntp_background": "rgb(81, 88, 93)",
      "ntp_text": "rgb(198, 200, 200)",
      "popup_border": "rgb(43, 44, 44)",
      "popup_highlight_text": "rgb(39, 40, 40)",
      "popup_highlight": "rgb(198, 200, 200)",
      "sidebar_border": "rgb(43, 44, 44)",
      "sidebar_highlight_text": "rgb(39, 40, 40)",
      "sidebar_highlight": "rgb(198, 200, 200)",
      "sidebar_text": "rgb(198, 200, 200)",
      "sidebar": "rgb(43, 44, 44)",
      "tab_background_separator": "rgb(14, 17, 17)",
      "tab_selected": "rgb(14, 17, 17)",
      "tab_text": "rgb(198, 200, 200)",
      "toolbar_bottom_separator": "rgb(43, 44, 44)",
      "toolbar_field_border_focus": "rgb(123, 140, 143)",
      "toolbar_field_border": "rgb(14, 17, 17)",
      "toolbar_field_focus": "rgb(14, 17, 17)",
      "toolbar_field_highlight_text": "rgb(198, 200, 200)",
      "toolbar_field_highlight": "rgb(62, 66, 66)",
      "toolbar_field_separator": "rgb(43, 44, 44)",
      "toolbar_field_text_focus": "rgb(198, 200, 200)",
      "tab_loading": "rgb(137, 161, 166)"
    }
  }
}