A package.xml file for Zolko's theme (https://forum.freecadweb.org/viewtopic.php?f=34&t=71110)

package.xml

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<package format="1" xmlns="https://wiki.freecad.org/Package_Metadata">
  <name>Zolkos Theme Package</name>
  <description>A preference pack including a stylesheet with tabs</description>
  <version>0.1.0</version>
  <maintainer email="zolko@zolko.org">Zolko</maintainer>
  <license file="LICENSE">GPLv3</license>
  <url type="repository" branch="main">https://github.com/zolko/ZolkoThemePackage</url>
  <icon>resources/icons/Zolko.svg</icon>

  <content>
    <preferencepack>
      <name>Zolko</name>
      <description>Theme with tabs</description>
      <tag>tabs</tag>
      <tag>stylesheet</tag>
      <file>DarkSide.qss</file>
      <depend>TabBar</depend>
      <depend>PersistentToolbars<depend>
    </preferencepack>
  </content>

</package>