applications/cms/data/CmsWebsiteDemoData.xml
<?xml version="1.0" encoding="UTF-8"?>
<entity-engine-xml>
<!-- cmsSite must be associated with a product store to get default theme -->
<ProductStore productStoreId="ScipioShop"/>
<WebSite webSiteId="cmsSite" productStoreId="ScipioShop" />
</entity-engine-xml>