private void updateDefaultBackgroundColor() {
		FunctionGraphOptions options = controller.getFunctionGraphOptions();
		Color newBgColor = options.getDefaultVertexBackgroundColor();
		if (!defaultBackgroundColor.equals(newBgColor)) {
			defaultBackgroundColor = newBgColor;
			if (userDefinedColor == null) {
				listingPanel.setTextBackgroundColor(defaultBackgroundColor);
			}
		}
	}
Signals to rebuild this component's data model.  This call should not do any real work
if the model is not 'dirty'.
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/ListingGraphComponentPanel.java