The desktop-config Element
From Documentation
It is used to customize how ZK handles desktops. You might have multiple desktop-config elements in one zk.xml.
<desktop-config>
<desktop-timeout>3600</desktop-timeout>
<disable-theme-uri>~./zul/css/norm*.css.dsp*</disable-theme-uri>
<file-check-period>5</file-check-period>
<extendlet-check-period>10</extendlet-check-period>
<theme-uri>/my/blue**.css</theme-uri>
<theme-provider-class>my.MyThemeProvider</theme-provider-class>
</desktop-config>