Examine source code of Windows Classic Modern

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Windows Classic Modern",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(236, 233, 216)",
      "toolbar_text": "rgb(2, 31, 85)",
      "frame": "rgb(13, 51, 117)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(207, 212, 220)",
      "toolbar_field_text": "rgba(0, 0, 0, 0.85)",
      "tab_line": "rgb(8, 31, 96)",
      "popup": "rgb(236, 233, 216)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(13, 51, 117)",
      "button_background_hover": "rgba(13, 51, 117, 0.13)",
      "icons": "rgb(118, 134, 175)",
      "ntp_background": "rgb(246, 243, 237)",
      "popup_border": "rgb(141, 142, 145)",
      "tab_loading": "rgb(8, 31, 96)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5669193-931e-485d-85b9-54a589251acf}"
    }
  }
}