If you have more than one OEM and want a red status bar in your production OEM, here the proceedings
Stop your cloud control
emctl stop oms -all
Unzip the $MW/oracle_common/modules/oracle.adf.view_11.1.1/adf-richclient-impl-11.jar in a new directory
$MW/jdk16/jdk/bin/jar -xvf $MW/oracle_common/modules/oracle.adf.view_11.1.1/adf-richclient-impl-11.jar
edit the picture dbd_topShadow.png (for instance) in adf/images/fusion-11.1.1.3.0/dbd_topShadow.png and copy it to META-INF/adf/images/fusion-11.1.1.3.0/dbd_topShadow.png with your favorite picture editor
recreate the jar
$MW/jdk16/jdk/bin/jar -cvf $MW/oracle_common/modules/oracle.adf.view_11.1.1/adf-richclient-impl-11.jar *
restart your OEM
emctl start oms
and empty your browser cache
You should see red
