plasma-framework/plasma/data/kconfigxt/libplasma-theme-global.kcfg

<?xml version="1.0" encoding="UTF-8"?>
<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
                           http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
  <kcfgfile name="plasmarc" />
    <group name="CachePolicies">
        <entry key="CacheTheme" type="Bool">
            <label>Whether or not to create an on-disk cache for the theme.</label>
            <default>true</default>
        </entry>

        <entry key="ThemeCacheKb" type="Int">
            <label>The maximum size of the on-disk Theme cache in kilobytes. Note that these files are sparse files, so the maximum size may not be used. Setting a larger size is therefore often quite safe.</label>
            <default>81920</default>
        </entry>
    </group>
</kcfg>