[news.eclipse.platform.rcp] CoolBar buttons in 3D with border

[hosa@xxxxxx (Hosa Prashne)]

I am creating a CoolBar and adding Actions to it.
The buttons are appearing on the CoolBar.
I want to make the buttons look like a 3D button with border instead of a 
simple flat button.


protected void fillCoolBar(ICoolBarManager coolBar){
  IToolBarManager toolBar = new ToolBarManager(SWT.FLAT|SWT.BOTTOM);
  coolBar.add(toolBar);
  toolBar.add(exitAction);

}

Please help.