private void firePaletteChanged() {
		ChangeEvent changeEvent = new ChangeEvent(this);
		for (ChangeListener listener : listeners) {
			listener.stateChanged(changeEvent);
		}
	}
Manages the colors used by the entropy overview bar.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/overview/entropy/OverviewPalette.java