private Component buildControls() {
		JPanel panel = new JPanel();
		panel.add(new JLabel("Group By: "));
		panel.add(groupingCombo);
		panel.add(new JLabel("Sort Order: "));
		panel.add(colorSortCombo);
		return panel;
	}
Tree for showing colors organized by similar colors and reference relationships. This was
built as a developer aid to help consolidate similar colors in Ghidra. This may be removed
at any time.
Ghidra/Framework/Docking/src/main/java/docking/theme/gui/ThemeColorTree.java