How to change the default look and feel.
   
Place the JTattoo.jar file in the (java_home)/lib/ext folder. Open or create the swing.properties file in the (java_home)/lib folder. Insert the following line:

swing.defaultlaf=com.jtattoo.plaf.mcwin.McWinLookAndFeel

Java applications which do not explicitly set the look and feel will now be shown with the McWinLookAndFeel.