diff --git a/upptst/DarkingColors/main.cpp b/upptst/DarkingColors/main.cpp
index 2a2fd6c90..273cfa667 100644
--- a/upptst/DarkingColors/main.cpp
+++ b/upptst/DarkingColors/main.cpp
@@ -19,6 +19,7 @@ struct ColorTest : TopWindow {
 
 GUI_APP_MAIN
 {
+	DDUMP(DarkTheme(Color(0, 0, 255)));
 #ifndef _DEBUG
 	for(int i = 0; i < 10000000; i++) {
 		RTIMING("MakeDark");