private static String fromExternalId(String externalId) {
		if (!externalId.toLowerCase().startsWith(EXTERNAL_LAF_ID_PREFIX)) {
			return externalId;
		}

		// We return the raw property name (e.g., TextArea.background), not the normalized name
		// (e.g., laf.color.TextArea.background), since the system currently does not provide the
		// end-user a way to change these values from the UI.
		return externalId.substring(EXTERNAL_LAF_ID_PREFIX.length());
	}
A Java property value for keys that use boolean values.
Ghidra/Framework/Gui/src/main/java/generic/theme/BooleanPropertyValue.java