diff --git a/winsup/w32api/include/winuser.h b/winsup/w32api/include/winuser.h
index 2c094c5db..879860f47 100644
--- a/winsup/w32api/include/winuser.h
+++ b/winsup/w32api/include/winuser.h
@@ -837,6 +837,9 @@ extern "C" {
 #define COLOR_WINDOW 5
 #define COLOR_WINDOWFRAME 6
 #define COLOR_WINDOWTEXT 8
+#define COLOR_HOTLIGHT 26
+#define COLOR_GRADIENTACTIVECAPTION 27
+#define COLOR_GRADIENTINACTIVECAPTION 28
 #define CTLCOLOR_MSGBOX 0
 #define CTLCOLOR_EDIT 1
 #define CTLCOLOR_LISTBOX 2