创建主题工程，打开WEB-INF下的liferay-look-and-feel.xml文件，初始内容如下所示：
<?xml version="1.0"?> <!DOCTYPE look-and-feel PUBLIC "-//Liferay//DTD Look and Feel 6.2.0//EN" "http://www.liferay.com/dtd/liferay-look-and-feel_6_2_0.dtd"> <look-and-feel> <compatibility> <version>6.2.5+</version> </compatibility> <theme id="rmfy-common" name="Rmfy Common" /> </look-and-feel>修改后的代码如下（ 此时使用该主题的页面默认无边框）：
<?xml version="1.0"?> <!DOCTYPE look-and-feel PUBLIC "-//Liferay//DTD Look and Feel 6.2.0//EN" "http://www.liferay.com/dtd/liferay-look-and-feel_6_2_0.dtd"> <look-and-feel> <compatibility> <version>6.2.5+</version> </compatibility> <theme id="rmfy-login" name="Rmfy Login" > <settings> <setting configurable="true" key="portlet-setup-show-borders-default" type="checkbox" value="false"></setting> </settings> </theme> </look-and-feel>