Examine source code of Vesterhav Minimal

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Vesterhav Minimal",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(238, 236, 235)",
      "toolbar_text": "rgb(133, 129, 128)",
      "frame": "rgb(238, 236, 235)",
      "tab_background_text": "rgb(133, 129, 128)",
      "toolbar_field": "rgb(238, 236, 235)",
      "toolbar_field_text": "rgb(72, 69, 69)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(238, 236, 235)",
      "popup_text": "rgb(38, 37, 36)",
      "button_background_hover": "rgb(226, 220, 216)",
      "tab_text": "rgb(72, 71, 69)",
      "toolbar_bottom_separator": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7ce863d0-4fb7-46dc-b605-7c6d0f453598}"
    }
  }
}