As for my second question, I found out that I miss the following
Code:
<bean id="formComponentInterceptorFactory"
class="org.springframework.richclient.form.builder.support.ChainedInterceptorFactory">
<property name="interceptorFactories">
<list>
<bean class="org.springframework.richclient.form.builder.support.ColorValidationInterceptorFactory">
<property name="errorColor" value="255,245,245"/>
</bean>
<bean class="org.springframework.richclient.form.builder.support.OverlayValidationInterceptorFactory"/>
<bean class="org.springframework.richclient.text.TextComponentPopupInterceptorFactory"/>
<bean class="org.springframework.richclient.list.ComboBoxAutoCompletionInterceptorFactory"/>
</list>
</property>
</bean>