public static IconValue parse(String key, String value) throws ParseException {
		String id = fromExternalId(key);
		if (isIconKey(value)) {
			return parseRefIcon(id, value);
		}
		return parseIcon(id, value);
	}
Parses the value string into an icon or reference and creates a new IconValue using
the given key and the parse results.
@param key the key to associate the parsed value with
@param value the color value to parse
@return an IconValue with the given key and the parsed value
@throws ParseException if the value can't be parsed
Ghidra/Framework/Gui/src/main/java/generic/theme/IconValue.java