@Override
	protected void installDefaults( JXTitledPanel titledPanel ) {
		super.installDefaults( titledPanel );

		// replace gradient background
		installProperty( titledPanel, "titlePainter", new PainterUIResource<>(
			new TitlePainter( UIManager.getColor( "JXTitledPanel.titleBackground" ),
				UIManager.getColor( "JXTitledPanel.borderColor" ) ) ) );
	}
Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXTitledPanel}.

@author Karl Tauber
flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatTitledPanelUI.java