private static void lafChanged() {
		darkLaf = FlatLaf.isLafDark();
	}
Checks whether the current look and feel is dark.
<p>
Uses {@link FlatLaf#isLafDark()} and caches the result.

@since 1.2
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatSVGIcon.java