Steps to Reproduce
include and set a preferred theme
<library-property> <name>org.zkoss.theme.preferred</name> <value>olive</value> </library-property>
Actual Result
While the correct style sheet is being loaded the <body> element still indicates the "iceblue"
theme
Expected Result
the correct style classs being added to the root element, allowing to apply theme specific style customization, and avoid confusion which theme is currently active.