public static boolean isUsingNimbusUI() {
		return ThemeManager.getInstance().isUsingNimbusUI();
	}
Returns true if 'Nimbus' is the current Look and Feel
@return true if 'Nimbus' is the current Look and Feel
Ghidra/Framework/Docking/src/main/java/ghidra/docking/util/LookAndFeelUtils.java