Examine source code of win10 classic blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "win10 classic blue",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(230, 230, 230)",
      "toolbar_text": "rgb(19, 19, 19)",
      "frame": "rgb(25, 99, 143)",
      "tab_background_text": "rgb(210, 210, 210)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(43, 43, 43)",
      "tab_line": "rgb(60, 108, 183)",
      "popup": "rgb(226, 226, 226)",
      "popup_text": "rgb(48, 48, 48)",
      "toolbar_bottom_separator": "rgb(179, 179, 179)",
      "toolbar_field_border_focus": "rgb(42, 114, 184)",
      "toolbar_field_border": "rgb(138, 138, 138)",
      "toolbar_field_highlight": "rgb(58, 126, 198)",
      "tab_loading": "rgb(60, 108, 183)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f026dead-835f-4fc0-8cec-10d2a01d81be}"
    }
  }
}