Examine source code of Forsted white

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Forsted white",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-019-7ce748211c61f9059493d4c4378e8a74.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 255, 255)",
      "toolbar_text": "rgb(86, 86, 86)",
      "frame": "rgb(249, 249, 251)",
      "tab_background_text": "rgb(86, 86, 86)",
      "toolbar_field": "rgb(249, 249, 251)",
      "toolbar_field_text": "rgb(86, 86, 86)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(249, 249, 251)",
      "popup_text": "rgb(86, 86, 86)",
      "button_background_active": "rgba(192, 192, 192, 0.5)",
      "button_background_hover": "rgba(217, 217, 217, 0.48)",
      "popup_border": "rgb(200, 200, 200)",
      "tab_loading": "rgb(223, 223, 223)",
      "tab_text": "rgb(86, 86, 86)",
      "toolbar_bottom_separator": "rgb(223, 223, 223)",
      "toolbar_field_border_focus": "rgb(255, 255, 255)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgba(0, 165, 255, 0.6)",
      "toolbar_top_separator": "rgb(223, 223, 223)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b1d36e8-bd4a-44fd-8aa3-bed090688770}"
    }
  }
}