Examine source code of Only White

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Only White",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(23, 49, 70, 0)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(196, 196, 196)",
      "toolbar_field": "rgba(38, 72, 102, 0)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(67, 194, 218, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(233, 233, 233)",
      "button_background_hover": "rgb(245, 245, 245)",
      "sidebar_text": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgb(255, 255, 255)",
      "toolbar_field_border": "rgba(23, 49, 70, 0)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(23, 49, 70, 0)",
      "tab_loading": "rgba(67, 194, 218, 0)"
    }
  }
}