I want to change background color Date if Record is not associated
<rich:calendar locale="EN" id="searchDateCalendarcommon" popup="false" showApplyButton="false" datePattern="dd/MM/yyyy" value="#{eventMaster.eventSearchDate}">
<f:ajax event="change" listener="#{commonOutputContentBean.showEvents()}" render="cmnoplayoutfrm"/>
<rich:tooltip followMouse="false"
showDelay="500"
direction="topRight"
layout="block">
<h:outputText value="#{eventMaster.massage}"/>
<h:outputText value=" - " id="wntabledfoptxt5"/>
<h:outputText value="#{eventMaster.eventSearchDate}"/>
</rich:tooltip>