protected void processJavaDefaults() {
		UIDefaults defaults = UIManager.getDefaults();
		UiDefaultsMapper uiDefaultsMapper = createUiDefaultsMapper(defaults);
		GThemeValueMap javaDefaults = uiDefaultsMapper.getNormalizedJavaDefaults();
		themeManager.setJavaDefaults(javaDefaults);
		uiDefaultsMapper.installValuesIntoUIDefaults(themeManager.getCurrentValues());
		normalizedIdToLafIdMap = uiDefaultsMapper.getNormalizedIdToLafIdMap();
	}
Extracts java default colors, fonts, and icons and stores them in the
{@link ThemeManager} and updates the {@link UIDefaults} by installing GColors for all
color values and installing any overridden fonts or icons.
Ghidra/Framework/Gui/src/main/java/generic/theme/laf/LookAndFeelManager.java